Welcome to IRV2, and to RVing, you will find a lot of nice prople here. To help answer your question on the amperage, the male end will have 3 spades for 30 amp and 4 spades for 50 amp. Sorry I can't help you with the surge protectors or the Generator.
Many safe and enjoiyable outing,
03 Silverado cclb 3500 drw, D/A, Reese 22k hitch
07 Alfa SeeYa Gold 30RL,2 slides,power everything