I just sold my 95 Lx which I surfed behind all the time. I was running a 750 behind the engine and 750 on the side with sack the in the ski locker. It was the fly high locker sac, 350lbs? We typically only had 2-3 people in the boat. If I were to do it again, I'd maybe get 1100s instead of 750s. You need the wedge too.
I tried few things like the wicked wake surf fake gate thing and I did a DIY suck gate, neither worked well. They made the wave big but no push.
I never repropped, I had no problem getting out of the hole even at 6,500 ft in UT. If you are running heavy weight for wakeboarding you'd need to reprop but for surfing it was more than adequate.
My wife who is 5'7" and like 120 lbs
Me 6'4" and 235