You didn't specify what else you have so I'll assume you just have what you say you have, airplanes and engines that work. Not sure about the radio you have but the latest technology is 2.4 GHz and is preferable because you don't have to worry about sharing the frequency with anyone as with 72MGHz.

Here's a list of things for your consideration:

1) AMA membership to fly, a club to join - optional but HIGHLY recommended
2) If you decide to go with the latest technology in radios and want to buy some flying time at the field, a new 2.4 GHz radio, new servos(you may be able to use your old servos) and new receivers

3) The below items are necessary:
Glo Starter
Chicken stick or optionally an electric starter and a battery
Fuel and a pump of some kind
Props and an extra glo plug or two
A field box or something to carry everything above inside

4) The below items are optional but RECOMMENDED
Charger/cycler to charge and cycle your radio and receiver batteries
Charge leads for above
Voltmeter to check the voltage of radio and receiver
Glo plug/prop wrench
Fuel filter for the pump and one for the plane OPTIONALLY


5) FRILL ITEMS
A Voltwatch for your plane to monitor your batteries after EVERY flight as you won't use your voltmeter to do this every flight, trust me!
A flight simulator - BELIEVE ME THE RESET BUTTON WILL SAVE YOU $$$$!
A prop reamer - believe me the props don't always fit!
Talking timer for $10 if your radio doesn't have a timer
Misc. items - Hobby knife, allen wrenches, screwdrivers, needle nose pliers, electrical tape, epoxy brushes, pins, Windex and paper towels to clean fuel off your plane, Sunglasses, Cooler, Folding Chair , Cap with a visor , Sunscreen , Bug Spray

You may not need new bearings for your engines. Clean and lubricate them then test them out first.

Hope this list gives you some useful info and/or tips! Good luck!