i abandoned completely optical drives installed on my pcs years, alost a decade
rarely i use one
for those cases i use a lg external usb dvd burner, it has worked well and is usb 2.0 which is enough for that
a blurary drive exists in both usb 2 and usb 3 but netflix made me not buy or get any more movies this way, steam is the same for games
i have a corsair carbide 250d, it is very big for a itx case but you can fit whatever you want in there and comes with space for radiator and many fans, the only limitation is the height of the heatsink, that noctua should fit there very well, i think the limit is 120 mms and it has space for 4 drives and a optical drive bay
just one idea
another idea is that manta itx from nzxt, but is too curvy and big, perhaps not the best option but will let you fit even more options for cpu heatsinks, almost nything you want, without the optical drive bay iirc it doesn't have one
are you looking to fit it on a small space or just want a smal itx pc?
manta and corsoair are itx but just in name more or less, the lian li is really small, two thirds of the corsair i have more or less