Yes, that transformer will be fine. Even not using the CT and derating the transformer by 0.45, it will supply the current.
Sound.... different. MooseFET sounds very triode-like.... maybe even more tubey than the single tube PAS line stage.
In public, people totally loved it or totally hated it - there was no in-between
The single tube PAS, all responses have been like yours. No one sent one back so far.
MooseFET can drive anything so far... SS amps, tube amps, new and vintage. Even the horrible <2K input-Z of those Parts-Express monoblocks that used to be available for $150.
Cheers!