I'd bet the bluetooth becomes an add on sooner or later. New to Lionel, so I wouldn't expect it real soon, but I expect it.
Bluerail had a larger board "near ready" for production a year or more ago,, but I never heard more about it. Could be the big names finally playing their Bluetooth hands has them moving more cautiously.
I'm not a Flyer guy enough to know the average AF amp draw is a match to the little board, it "seems" like it would be fine for most AF, especially smaller ones; but that's a guess based on open frame motor draws in general. Now the 8amp board; it should handle about anything you could throw at it. At 8amp, standard gauge likely wouldn't make it sweat.
Easy to figure out what you need if you have a multi meter and the loco. Just put the meter in series on the transformer power to the track to read the amps the loco uses. (To compare, my largest draws on Lionels are about 3.5-4a continuous (with a long train) and 5.5-6a peak (both on start up) for an open framed GG-1 and Hudson.)
