Even best case scenario, wouldn't have groupbuy spacebar until February. Need week to collect payment, 2-3 week production time, week to pack orders and ship out. Spacebar from Cherry G80 have offset switch stem which don't fit on Filco/Ducky/etc. so that leave with more recent spacebar from GMK set, or PBT from imsto set.
SP DCS...doesn't match very well on the bottom row at all, it is very high front edge and sharp sharp corner on there. DSA is probably better match on shape to Cherry.