Boomerang intro is a great place to start.. You'll need a 12 -17 lb thrust engine, P-60, p-70, Wren MW54, PST 600R etc. Servo requirements are modest they only call for 70 oz in. You need 3 in the tail, 3 in the wing, and one for nosewheel steering. If you want brakes and retracts, that needs 2 micro servos. A 6 channel radio will do it, although a more capable radio gives you more options.
Ground equipment
you will need:
CO2 or Halon fire extinguisher
A fueler jug,
bottle of powermax or propane unless your engine is kero start
taxi tank
ear defenders (optional, but a really good idea)
field battery charger

The Reaction 54 is also a great jet, unfortunately, Bruce is out of them at the moment, although used ones pop up in the classifieds from time to time...