I think Gonzo is your guy. He is my 4th or 5th TE and as such 11$ is probably a decent price with Graham/Gronk type guys going for over 20$. Like you said, the TE position is pretty lacklustre outside the top couple guys and I think Gonz is in that list. He's not that top tier by any means but definitely in the pack below Graham and Gronk.
Stafford for 23$ on the other hand, looks to be at or maybe even above the value he would go for. Assuming there are 5-8 QBs kept (the four you listed plus Wilson, maybe Peyton or Rodgers...) there should still be some considerable talent available and not too many people bidding on it. If you wait it out a little and maybe help bump the price of the top guys you should be able to; a) get Stafford back for $23 or less or b) get another one of that tier of QB for at or below that 20$ price tag. I don't think you mentioned how many teams your league is, but assuming 12 teams and 6-8 already have QB's, you should be able to get a guy like Romo for relatively cheap and then take a flier on a guy like Geno, Manuel, Barkley or Dalton in the hopes that you can have you steal for next year.
I hope it helps...
12 team auction (100$)
Wilson 3$, Dalton 4$
Foster $30, Charles $16, Tate 2$, Wilson 10$
V. Jackson 10$, Boldin 3$, Garcon 4$, Witten, 4$, T. Austin $5, Patterson 2$, Tate 3$, Dobson 1$
Tucker, K 1$,Tynes, K 1$
NYG D, 1$