you'll be cool easy, just remember to take all precautions and go overboard on your first hook up, nothing worse than getting burned by a dead board in a few days on your first build. First thing I do is use nail varnish to cover all the onboard smt around the socket. Liquid electrical tape is a good alternative, just mask off sensitive areas. With these custom mounts you need to take precautions upon first builds due to inexperience. DC4 is a messy substance but it helps keep things running, that's what matters. Be sure to trim down the longer inductor and cap pins on the rear of the board under the backing plate. Obviously your backing plate is plastic so you are safe from short circuits via contact, but if the pins are too long the board will warp somewhat under pressure, and with these multi layer boards that can create issues. Just simple stuff I picked up via direct experience rather than hearsay. If you need variety neoprene packs there is a supplier in the uk that does small cuts of various sizes, which are quite useful. I put a primary layer of very thin neoprene over the motherboard around the socket area, after unsing the nail varnish and a backup thin smearing of dc4...
regards
Raja