Pegging dos and donts

Hello all. I'm here looking for imput. My wife and i are discussing pegging and if we should try it. We are both into the prostate toys and such,but pegging... is a but intimidating. She it's of the opinion she could hurt me and i am a little lost all together. I'm not sure what to do while its happening. Do i masturbate or stroke myself? Reach back and finger her? Or just lay there and take it on my back? Also, I've never had things thrust in and out of me before, so I'm not sure the sensation. We do have a few prostate toys that get inserted, but nothing that gets repeatedly thrusted. I do know ill be using buckets of lube of we do it! Lol any toy suggestions, position recommendation or things i can do to make it more pleasurable for the both of us would be apprrciated!