Also check out SQLabs - they do 12 - 16deg backsweep bars with minimal (I think about 10-15mm?) - They're quite spenny new but do come up regularly now second hand for a price thats a bit more reasonable.
They sort of sun bleach over time I wouldn't worry about it, they're also super nice to ride - would you think about a 7-10deg stem with no spacers vs the -17, might me nice w/ the angle of the tt?
Annoyingly got stuff on (and my fixie is in bits). Hopefully I will make the next! Happy riding 🪽