I know this is a two year old thread but I’m replying since I ended up buying incompatible and unoptimizable products due to info notably from here.
1. Only a 240 aio like the h110i can be mounted at the front but you lose the fan mount where the water tubes leave the rad and on the opposite side only a 120 can be mounted adjacent to the rad. So for example 240 aio at the front tubes on top (unfortunately) with two 120 intakes, two 120 along the bottom and a single 140 at the top near the rear.
2. If you install a 280 like the h115i in the top, you can only mount a 120 in the front slot closest to that rad. But you can still install a 140 next to it. Meaning you could have a 120 and 140 at the front, two 140s at the bottom and the 115i with two 140s on the top.
This case favors mounting rads at the top more than the front like other cases and If you want to fully populate all the fan mounts you have to go with either a single 280 max on the top or go with a custom loop if you want a front rad.
To be clear: You CAN NOT install 140mm fans all round and water cool at the same time. Either you go with a 280 aio on the top and at least 1 120 fan front or you go 240 aio front and lose a fan mount outright and end up with at least 3 120mm fans in your build. I have two LL140mm fans for sale and an h115i platinum for sale if someone doesn’t believe me and wants to try themselves!