I'm by no means a tone-master, but here's a patch I use with my Gretsch and Tele (with minor tweaking) for my take on rockabilly:
https://www.dropbox.com/s/ytpjas3hhfjx70e/SetzerishShare.tfx?dl=0 I like that one singtall linked to, might try swapping that amp into my patch, but the verb/delay on mine is a bit more dialed in, IMHO.
Edit: Realized I left the volume pedal on/cocked in that snapshot. Might want to bypass it or play with it.