I can't say "rest" or "play" because they're so very black and white answers. I think Doc is going to do what is in the best interest for the team to contend as best as possible in the playoffs. I honestly don't think it's worth it to drain our energy in securing home court advantage only for the first round. Because if we lose Game 1 at home, then HCA is out of the window just like that.
I'd continue with the starters on the floor in Atlanta and if it looks like we have a real chance to win the game, then let's go for their throats and hope for the best against Miami and Milwuakee. I think we win the tiebreaker against Atlanta if we end up tied? But if we're down by 10 in the 2nd quarter...then just keep Pierce, Garnett and Bass warm and fine tuning their engines. If 20 minutes is all they need, then 20 minutes is all they need. Give away the Miami game (don't tip them our hands) and the Milwaukee game should be done at full speed to get us ready for the playoffs.
Honestly, if we're scared of going into Atlanta and stealing a game from them, we aren't contending.