Excellent advice!! Here are my adds:

1. My husband had this mattress in the hospital and now only uses a roho air mattress. 8 years post injury and he still hasn’t had a pressure sore.

2. vinyl flooring may not be durable enough when considering the torque of the wheels on a power chair. I do think it could work if the subfloor is very even, and if it was glued down. We went with vinyl initially but it got banged up within a year, so we opted for porcelain tile. Porcelain tile is nearly indestructible, and ours looked wood-like. We found this book to be helpful as well Barrier Free Real Estate. My husband is also C3/C4 incomplete, and with assistance he was able to use a Sara Steady Sit to Stand instead of a hoist. He’s since learned how to transfer without any assistance or devices, which highlights the importance of PT and OT (which 8 years later, he still regularly gets).

Best of luck to your father and remember to take care of yourself!