ACS skills assessment for Network and Computer Systems Engineer

Hi everyone,
I wish to apply for a skills assessment as a Network and Computer Systems Engineer but I do not know if my current qualifications and skills meet the requirements of this profession !!
I had a free assessment from a MARA agent and he assessed my skills as a network administrator (which I think I have the right skills for) but I prefer to apply for a skills assessment as a network and systems engineer IT systems for more visa and state appointment options (189,190, individual state appointments).

Honestly, I would say that I do not currently have the requirements for the profession of Network and Computer Systems Engineer and therefore would like to know the minimum technical / practical skills and experiences that I would need to add to my current skills to be qualified for this trade.

My current qualifications / skills / experiences:

Training / Certifications:
MCSE / MCSA MS server 2003 + MCTS Exchange 2007 + MCP XP
BSc in Information Systems – November 2006.
3-month diploma in Maintenance & Networks – 2003
Currently in preparation for CCNA, and later CCNP

Professional experience:

Total of +7 years in IT roles

Technical support engineer (almost 3 years to date) my current job
 Active Directory management, including organizational units, groups, users, computers, and group policies.
Print server management, Installation, configuration and troubleshooting of network / local printers.
Cisco CUCM call manager management, configuration and troubleshooting of Cisco IP phones.
 Management of the email system (Google Apps), creation and modification of email accounts for users.
Management of the security camera system.
 Installation of new desktops, peripheral equipment and network peripherals.
Troubleshooting, installation and replacement of defective parts in desktop computers.
Installation of operating systems, applications, drivers and updates on PCs / laptops.
 Provide technical support, guides, advice and training to users.
 Writing of IT documentation and user technical guides.

Office engineer (1 year 7 months)
Installation and removal of PCs, laptops, monitors, printers and scanners.
 Installation and deployment of operating systems, applications, drivers and security patches on PCs / laptops.
 Installation, configuration, troubleshooting and repair of network / local printers (HP LaserJet 1312, 2015, 2050 series, HP MFP M3035 / M4345).
Troubleshoot and resolve network connectivity issues on PCs / laptops.
 Flavor preventive maintenance, diagnose performance issues, troubleshoot and resolve software / hardware issues on desktop systems.
 Creation and deployment of system images.
Record, update details and resolve incidents using the BMC Remedy system.
 Provide technical guides to users.
 Presentation of weekly and monthly reports to senior management.

System / IT administrator (2 years)
Administration of the corporate LAN / WLAN, including servers, clients, domain users and shared resources.
 Implementation of LANs & WLANs projects for client companies.
Installation, configuration and execution of the local IP-PBX & IVR system.
 Implement VoIP projects for customers and provide support.
 Research and testing of new VoIP and voice technologies (IVR systems, IP phones, soft phones, IP PBX, FXO, FXS and SIP gateways).
 Maintenance of desktops, laptops, printers, scanners, etc.
 Administering company e-mail, performing backups and imaging systems, resolving DSL problems, documenting computer equipment.
 Research, recommendation and purchase of computer supplies.

IT technician (1 year)
 Provide IT support and technical training on hardware / software to end users.
 Assistance in LAN / WLAN implementation projects.
 Perform certain support services such as (drafting of technical guides and offers, design of brochures, translation, etc.).

Technical skills:
MS Windows 2000, XP, Vista, 7, 8, NT, Server 2000/2003/2008/2012
MS Office 2003/2007/2010/2012
Acronis Snap Deploy 2010, Norton Ghost v12, Image for Windows v2
LAN / WLAN, UTP cabling, TCP / IP, WINS, DNS, DHCP, IIS, firewall, Ethernet
CUCM v8, Cisco IPPhones, Soft Phones, SIP Gateway / FXO, FXS, IP-BPX.
Win Server 2003/2008 Active Directory

So what are the skills (minimum) that I must add to my current skills to be able to obtain a positive skills assessment by ACS for the profession of Network and Computer Systems Engineer ??

If I get CCNA / CCNP / VMware..etc vendor certification, do I need to have work experience on its topics to be recognized?

for example: I am a CCNP and I know all the network skills related to this certificate but I do not use these skills at work – if I am a computer engineer for example – will my CCNP be recognized?
WHERE
Should I be CCNP and practice CCNP topics at work?

Your advice and comments are greatly appreciated.

Thanks in advance..