Look, as far as Street CA spots go, if you have ATP mins, and can't get a call for Street CA interview, just take an FO job and then bid the next upgrade. Saab classes run about every 2 weeks, so you wouldn't need to wait long.

Street Captains don't jump any lines. The only difference for them is they get paid CA pay from day one, and an FO new hire who took an immediate upgrade would have to wait a few months for the CA pay.