My husband is also waiting for surgery and I just want to wish you super successful RARP and zero issues afterwards.
Also, if hiring somebody for help is going to take some weight off your mind and ease your worries just do it ! It is nice to have somebody available even if it is just to have that someone confirm that all looks normal and can bring you food and all other necessities. We should never forget that body heals much faster if our mind is not stressed. Do what will make your life easier and especially if you can afford it - why fret ;).