I did notice there were other versions of that case as you went higher in the price, but ventilation isn’t a problem if you do it right.
Looks like you can fit an extra fan or 2 in the top and 1 more at the front going by the pics, seems open enough, It will probably have better ventilation than my gamemax case which has 2 top and 1 rear fan and that’s all it supports lol, do have fair space in case, but the front doesn’t suck air in, dont think air goes out either, but my system is running fine, okay it’s not slim and was half the cost, but depending what the OP puts inside it could be do-able otherwise unless they find better elsewhere, they might have to get something like the coolermaster V1 core cube, I don’t know how much bigger the m-atx version is to though.
Edit: Forgot to ask, what graphics card are you putting in the case and do you have a m-atx board or just want an m-atx case because it be more roomy using a itx board?