Hi and welcome! I'm fair new here also but long time air gunner.
Honestly dont go crazy with mounts on that rifle.Its probably a decent Springer but will have limitations. Something simple like the BKL mounts will do the trick. Getting the right height, mounted correctly and probably lapped will set you up as good as you can.
I would do some searching on what pellets do best out of that gun and try them all cause every gun is different. Once you find the best group stay with that pellet and sight into that pellet.
Use and know your hold overs in your scope at certain zoom levels.