the big smart pi case could handle 2 cards in one body
you have a slim and a big back end if you combine the 2 cards with a 40 pin extention cable your done
or you still want cooling on it you can to buttons you can place any where with some soldering.
i have the standard screen like you with the standard case this cooler in the back and a external usb dac that worked for me.
buttons you can place any where with some soldering.
