I think a lot will depend on Holt's starting line up, Hearts are like Motherwell, they have quick players who can rip you apart down the wings, I think we have to go with Lamie and Odoffin as WB's to help out our back 3.
Keaghan may still be out injured so although i'm a bit unsure about Lawson's defensive abilities i'd stick him in the midfield 3 with Pittman and Byrne, as I can't see anyone better.
Either Tiffoney or Dolly to partner Hardie up front, both have pace to run at the Hearts defence and soften them up a bit for the other to come on as a 2nd half sub.
If we can keep it tight at the back first half and go in 0-0 i'd be happy, I think we could nick a 2nd half goal to get something from the game. Hardie is due a goal anyway, and I think once the first one goes in it'll get us going again.