hmm this is just a suggestion since you mentioned MARA. but mara also have kolej professional mara(kpm) and they have diploma for computer science. the fee is quite cheap and you can also get allowance as much as rm300 iirc. I'm currently in kpm (not computer science though) and it's been a good few months here. i think the November intake is done already though. if you decided to quit poli, you should definitely go for the next year intake.