Very interesting 100-200 hand. Need all the help i can get!

[Nezzar]

Im writing an article for pokemagazine (swedish magazine) and im analysing a very, imo, intereting hand. Im almost done with the article. But i dont wanna turn in something and find out afterwards that i have missed somthing in my thought process. i was hoping you guys could help me out here.

6-max game. Folded to Zupp on button who raises to 800. Timex calls with 7-7 from SB and BB folds.

Flop(1800) 8-8-8.

Timex check, Zupp folds, Timex calls 1300.

Turn(4400) 5.

Timex chk calls a 4000 bet.

River(12400) A.

Bord is 8-8-8-5-A. Timex checks, Zupp goes all-in for 13700 and timex after along time calls with 7-7. I think that river has many levels of thinking... Is this a bad or good call?

Timex hand is face-up to Zupp, who is a very good thinking highstakes player. Timex, from what ive seen, is also a very good thinking player.

If u want to know results right away ill post them...