Two things I guess I do differently are:
-Try to do as much as possible to keep copper (and eventually silver) coins from getting near the bottom unless there's a plan to match them away.
-Try NOT to make 4/5 matches with Green and Red chests. They're too hard to make to "waste" like that (he says, not knowing the drop rates of green/red/vaults. I'd rather turn 5 Green into 1+2/3 reds than 1 red and an extra turn (usually).
So early, I'll try and make copper 4/5 matches from the the top first, and gold or better from the bottom up. I'm also more likely to pass on a 4-match to set up a 5 in the top 2-3 rows because it "feels" less likely that random drops will bone me.