Having returned to model building four times over the years, due interruptions from other priorities, I can empathize with your situation. Welcome back.

Recent advances in EDF has made it feasible to convert airframes previously designed for glo-DF. Of course, you can also design from scratch You may already know that 90mm diameter fans with 5-lbs static thrust have been around the last couple of years. Fans in the 105mm w/ 10-Lbs thrust & 120mm w/ 15-lb s.t. are just becoming available. As far as bombers go beside the B-52, Bullet (RCgroup handle) have build & flown a B-1 & B-70. Chris Gold of the UK have plans for an A-5 Avenger. There was a large Vulcan glo-DF which was unfortunately lost a couple of years ago; it might be convertible to EDF. I'd wish someone would build a Vulcan or Valiant. Then there are the B-45 & B-47.

Hope to hear soon what you finally decide to start on. Cheers,

Phil