Here is my suggestion for your cafe.
These are the FACTS which i am stating after observing a gaming CAFE from past 4 years in my native.
1. Four years back, this guy started of with 10PCs with 5 PCs for internet and 5 for games.
2. He got the average/moderate AMD config for that time and all the accessories he got are of el cheapos.
i.e all the mouse, KB and headphones were from TECH COM & without any GPU.
3. In the gaming PCs he installed multiplayer games like CS and TF2 and others. People started coming to the cafe
and soon got addicted to the multiplayer games. He used to charge 15/- per hour.
4. Within 6 months, he started selling th pirated games for 100/-!!!, he also started printing document busines.
5. AFter an year, he bought 20 more computers with the GPU this time, the card was freakin 8400GS.
6. After another 6 months, he increased the facilities with cold water and snacks near the cafe.
7. After 2 years, he started pirated PS2 games with more computers.
8. Now he totally had 60 computers which covered an entire floor. He started installing all new games in all pCs.
9. Last year, he bought another 100 computers and an entire floor with full power backup from Deisel Generators.
10.At present, he has around 180 computers, with 150 for GAMING and 30 for internet surf.The computers have 9600 GPUs
with AMD setup with CRTs.
11.Almost all 150 gaming computers will be FULL during weekdays and during weekends you have to wait min half n hour to
get the system.Now he charges 10/- per hour.
12.He has also started selling GAMING stuff like games, mouse, KB etc.
What i like abt him is,
(+) Very good way of business expansion.
(+) Takes really good care of customers & also educates the noobs.
(+) Taken care abt the cooling of the system and power backup.
Not like abt him is,
(-) Charges insane prices for pirated games/other stuff like prints.
It is Ok to price that high coz there is nobody to compete. Imagine 2rupee for B/W print out and 15/- for colour print.
Friggin 200/- for pirated games which have 2 DVDs!! He doesn't do much there, just downloads the game, burns it in cheap
DVDs and take one colour print for the cover of the game sells it for 200/-.
His main source of income is from PCs & selling the games.
So, here is my suggestion for you.
1. Instead of making exclusive PS3 cafe, make it PC & PS3 cafe, may be 5 each.Don't bother XBox coz of RROD.
2. Get 22" LCDs with moderate/avg PC configs.Take care of cooling & power backup.
3. Get more of multiplayer/co-op games and you can also start selling the games or game library.
4. Take care of snacks & other stuff like furniture.
Hope that helped.