wow! 25 - 30K iCafe PC!
first question : Location sa cafe < it matters for ROI and Crowd quality >
1 : Look for PC Store with 2 years warranty for 2 years of peace of mind. specially for Monitors and KB and Mouse
2 : DO NOT BUY pre fabricated Computer boxes, its very expensive for it's cost. it's almost a rip off!
Make you own computer box if you want stand alone units. hire a good carpenter and painter
3 : SKYLAKE is the new kid in the block, so spend on nothing less than LGA1151
: Have a G4500 or i3 6320 for a procie + LGA 1151 H110 motherboard
: 8GB < 2 x 4GB > DDR4 RAM
CoolerMaster X525 PSU
Cooler Master: Extreme 2 525
generic casings, buy 2nd hand @ PhP300
DISKLESS Setup
use i5 for server with 16GB RAM, GTX950
use SSD not Traditional Mechanical HDD
RAID0
RAID0
RAID10
Gigabit Switch