amd a4 5300

hello i want to upgrade my computer,is this hp pro motherboard can fit any pc case? and what upgrade do you advise for me..thanks

Just a quick question, I have a Seasonic 750 Watt Bronze certified modular PSU and at present I am running a single MSI Geforce 970 GTX 4G Gaming card and I would like to know if this PSU will be capable to running two of these cards in SLI?. Also do I need the bridge link between the two cards...