Hi Joe, welcome to the forum!
Yep, a Holy Diver set would suit you very well. They have a particularly vocal lead tone, and make great partners with basswood superstrat-style guitars.
As for the middle position, that depends on how you like to use it. When I use HSH guitars, I like the middle pickup to be somewhat weaker so that the sound cleans up and gives you some sparkle in positions 2 & 4. If that's what you prefer then the Mother's Milks would be great in there. If you want a more powerful middle pickup, the Irish Tour or Slowhand would work well, the ITs being more aggressive and gritty sounding, while the Slowhands are really quite fat and smooth.