Hi,
Thank you for posting your requirement.
My name is Inderjeet and own a small 4 member IT services firm based at Chandigarh,India. We have been into IT since 1994 (desktop software), into Web-apps since 2001, Asterisk based servers for about 2 years and Wowza/FMS based video streaming/VOD apps for about 5 years. We also maintain our clients' servers (mostly linux) on their behalf besides fiddling with our own Linux test bed VPS's and VMs. We have been working on CentOS since 2002 and play with other Linux OS's also for R&D and future purposes (firewalls, network sniffing, mobile development, ethical hacking etc). We're Currently exploring International clients through these portals for mutually beneficial and long lasting collaborations.
There is a contradictory line in your requirement in that diagram: "Left network to access Internet from gateway without the wireless". Do you mean you wish to use wired ethernet for the purpose? You can do whatever you wish but the ip addresses will need to be reassigned. The hp switch must be either connected to network on right through cable OR via an access point. In theory if you want this will cost you $110 as it may take 30-60 minutes for reviewing the settings in your routers/modems. Can walk you thru later but it will cost more as per time.
Let me know if you have any questions or comments. Looking forward to a positive response and developing a long lasting relationship.
Sincerely,
Inderjee