Fractal Arc R2 Mini incoming and have a few questions

So this case is incoming and i have a few questions. First question behind mounting an SSD behind the motherboard tray. I have a 850 evo incoming and i would like to mount this behind the motherboard tray but i feel like this is bad for the SSD? Will it get enough air behind it to keep it cool? My second question is i have a corsair h80i incoming and im wondering where the best place to mount this cooler in this case. Im guessing the rear exhaust area? Also, it was recommended by someone to mount it on the rear exhaust area and have it drawing cool air in from the outside. Will the top fan exhaust enough of the hot air I'm introducing to keep my case cool? I have a custom style cooler on my gpu and worry about overloading the inside with excess heat.

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What CPU are you putting the H80i on? The Arc Mini has a lot of options, I used my radiator as intake on the front, with every fan on intake except for the rear fan, which was my only exhaust.

Behind the tray is a cool enough spot for the SSD. They don't get hot.