Do you think the following build would be wise? Is it too small? Does smaller the case mean more heat?
Personally i dont like it, all its too cramped and hard to work with, now if you need or like a small case style then go ahead, this is more a personal decision than whats best, there are much bigger cases with much better airflow like HAF X at the expense of noise, now here is where you should decide what you want and aim for that, you are on a forum that likes quiet computing, there are lots of options for building around a form factor like mATX, like Fractal Design Define Mini, Antec P180 Mini, Silverstone TJ08-E (if you undervolt the front fan), or in ATX Fractals Design R3, Antecs P183v3, 280, Solo II, (to mention some, but there are lots of options). Im sure there are options for mITX, but not as wide as for the other factors, you could try, if you feel there is a gain in the size, personally i would use mITX for HTPC with a case like H3 or alike, or a small NAS with Q08 etc, but for buidling a gaming pc, i dont have a need for going that small, i dont go to LANs, micro atx for me its small enough, again here is a more personal choice for you, if you really need or will gain something going into mITX, go ahead.