unrealcycles prices suck last time i checked...nor is the Inbred the right choice per the question, though its a nice bike otherwise
having said that, On One is a great choice though but the 456 version, or the 456 Summer Season if REALLY slack (too slack for me) is desired - I was too lazy to compare against the Trans Am geo to see how it differs though head angle for the 456 (~68 deg with 5" fork) or Summer Season (about 2 deg less than 456)
other advantage of On One is the price...order direct and while shipping aint cheap, overall, its a GREAT price for a great bike.
I have a 456 recently built up and find myself flipping a coin on rides lately as to whether I take it or the new Turner FS
there are however many good options nowadays but given the good price of On Ones at least worth comparing the geo to see if it might work
another VERY good choice no doubt is the new Ragley Blue Pig...and a KILLER price. While only available at Chainreactioncycles in the UK, their shipping prices (if any) are amazing as is their customer service (based on my experience with them to date)...highly recommend, i.e., https://www.chainreactioncycles.com/Models.aspx?ModelID=39112
67.5 deg HA (not sure with which length fork that corresponds to however)