I've 'teethed' on the Wingo park flyer and didn't expect problems w/ the Formosa, but this electric stuff is complicated ;-)
My battery packs (I have two) are 730mah/8.4v GWS? and I use a Triton charger usually set to 'auto'. It'll charge around .4amps. I've done manually at .7amp before.
I think my ESC is rated for 8amps continuous/15amps max. Is that large enough? What brushed motor would be a good replacement?

Thanks