That's awesome. I've just been replacing lamps in my HH with LEDs recently and have been cursing the location and angles of those main playfield lights. Once the wiring and lower playfield ramps are added it's brutal to try to get to without taking things off.
I'm thinking I'd like to take a shot at doing a playfield swap some day on this one once I wrap up more projects. Definitely excited to see you getting things closer!