With these group of guys, and the fact that you want your PG to get the ball to your SG/SF but your big men can also score decently, I wold simply go with Base Offense. This way your PG controls the game and the ball will get to your SG and SF a lot more. Not many people use base offense, but i believe it will be very effective for your team. Hope this helped.
Murray/Harris/MPJ/Grant/Jokic - 2020 NBA Champs