Darren: a sub 5' board for a 225lb guy to learn on? He better have a huge wave or he'll never free ride.
Best advice is buy a cheap used board off ebay that's over 5' like HL landlock, CWB Ride. I got my HL broadcast for $150 shipped and it was like new. I did out grow it in a month of riding but keep it for other beginners. I progressed to an Inland Surfer and now to a short Phase 5. ---Learn on the cheap, spend some coin on an advanced board when you get to that level.
Your question has been answered many times over in the surfing section. Check it out there.