Is CISSP for me?
I have reached a point in my career, where I believe I should start  transitioning into a more senior/management role. The field of the  network security really interests me and I would like to make it my  primary field of expertise. I am looking for a certification that would  give me a "jump start" into that field. At first I was thinking about  OSCP but after reading these forums for quite a bit, I am not so sure  any more and started thinking about CISSP as more beneficial. I read  Keatron's post about the progression and I think more or less followed  it.
Here is a bit of info about my background and education.
I started out as a help desk in USAF in 2000. After 4 years, I got out  and found a civilian job as a help desk which eventually turned into a  system admin. For the past 5 years, I work as a network engineer. Since I  am with a relatively small company, I am the only person who supports  the whole infrastructure and my responsibilities are very diverse.  I  support two colo's and one office locations including about 18 Cisco  routers and switches, 6 Cisco ASA, IPS and around 70 servers.
My security related experience: DMZ and DR design and implementation,  firewall management, IPS configuration including custom signatures for  our in-house app (we process commission's for traders), VPN's - dial-in  and site-to-site, implemented RSA SecurID, preparing my network for  compliance and security audits, vulnerability scanning, patching, a bit  of pen testing my network perimeter, GPO's, server hardening, logs and  traffic monitoring. I also wrote policies for the backups, DR, router  and server hardening with checklists and etc.
Education: BS in Computer Science, MS in Telecommunication Networks,  CEH, CCNP Routing & Switching, CCNA Sec. Currently, I am 1/2 into  CCNP Sec - still have VPN and Secure exams left but I will sit for them  by the end of October (doesn't take long to study if you work with the  technology every day).
Questions:
1. Given my experience and education background, is CISSP a next logical  step for me? Or is there any other certification which would be better  suited?
2. I know some of the posters here are in the senior/management positions. Would you hire me if I had CISSP?
3. I am afraid that coming from a small company would lower my chances  of getting a job in a big corporation. Does my fear have a merit?
Thank you for reading and your comments in advance.