No way can you have Gibson and Lopez start alongside Rondo, Wade and Butler. Mirotic has to start with either Gibson or Lopez moving to the bench. The floor spacing would be horrendous.
I expect to see both Valentine and McDermott be heavily involved. Wade probably won't see more than 30-32 minutes as you want to keep him healthy. Butler gets around 35. The good thing is we probably won't see a lot of Snell. I think you could see lineups as well where they go without your typical PG and opt to have Wade, Valentine and Butler run the offense.
Mirotic I think is going to get a lot more minutes this year. Probably starts at the 4 and gets closer to 28-30 minutes a game. Gibson will see more time at C. Probably means less time for Feliciano though who I thought was pretty good. He is a nice reserve to have if an injury were to occur.