pl11

hey I'm about to renovate my 1.6 turbo engine and installing new connecting rod oil pump and bearings.but will run with the original pistons and wonder if you should increase the gap of piston rings when you want to charge a little more about 20-24PSI? MLS gasket is it worth the money? or is there some else good brand that holds good when you start charging more I will run the ARP to the top and bottom bilet oil pump.
grateful for the advice
pengar peter