gain around 22 pounds in 4 months, building whole body strength for playing rugby. mainly more functional movements than isolation but open to any ideas

im trying to gain some serious size whilst getting stronger and more powerful. What type of rep ranges do you guys recommend? Im planning on doing mainly funcitonal movements with one or two...

cheers guys thanks for the advice
dont worry about nutrition got a pretty solid idea of what im going to be doing food wise. Im probably gonna stay away from isolated exercises to more functional...

So my goal is to gain around 22lbs and to to build a whole body power build as i play a lot of rugby and I'm thinking of doing it with a mixture of olympic lifting and powerlifting as well as a...