I'd suggest getting the 339 set up better and ask the tech to make sure the bridge matches the board radius. I bought an Epi 335 Pro and looked at the 339s, but was surprised to find that the bridges had a smaller radius than the board, so the middle strings are higher than the high and low E strings. A proper setup usually has a slightly flatter radius at the bridge to allow a little higher action on the low E and A, which need more clearance. WRT those Epi pickups, you could try a used set off ebay in your HH Strat but they won't make a Strat sound like a semi hollow. Lots of used HBs for sale, buy & try till your happy!