If there's not enough memory slots or USB, then you might be better off with the JR version that's coming later

Also, as for it clocking as good as a full size board, it's very close on the test bench, but inside a mini ITX case it's going to be slightly less, unless you can ventilate it well and use some kind of cooling on the mosfets front and back. Need to test further to confirm this, but at the moment, that's how it seems.