I'd agree if Heide had more than one hero game this year and otherwise hasn't really screamed out start me you won't regret it.
Despite a lot of protestations earlier in the month, I think everyone is more or less on board with the fact that Loyer has slumps and that he's currently in one.
We also know when he's on, he can get you high 20s without breaking a sweat. I don't know that we know that about Heide yet.
I think you start Loyer and see what he has. But if he misses those first few shots, he almost never comes back in the second half. That's when you give more minutes to Heide (first) or Colvin, see if one of them is feeling it, and go from there.
But you gotta see which Loyer you are going to get, because "good" Loyer is a game changer.
Having said that, if Heide pops off a couple more hero games before the tournament ok maybe you rethink things.