I need an expert to convert my invision forum to vbulletin and optimizze it

[pamamolf]

Hello

I need an expert and trusted to convert my invision to vbulletin and optimize my server and forum from scratch (xcache or memcache and sphinx setup).

I am thinking to move from invision to vbulletin for performance reasons as i can't handle 500 users online per minute

If it is possible to use also Nginx as it seems very good for me but i can hear your suggestions

Also for huge forum sis it better to use Myisam engine or Innodb?

Good payment for sure

Let me know please who can do this and how much it will cost me so i can buy the license

My forum has 2.500.000 posts and i am using dedicated server 24gb ram and 2x quad xeon server.

Thank you