1) You don't need to get one of these TEs you're talking about - you're not going to get Antonio Gates style points from any of them. You'll average 8-13 points a week. One of the guys I listed for you will average AT LEAST 10 points week, particularly KC's TE. He's their #1 target since they run so much.
2) You're giving up a WR that w/ Vick will get good points. Kolb will not be starting the rest of the season - I would put Austin on the bench when Vick comes back.
3) Denver is much like Dallas (including Austin), NO, NYJ & NYG - they have a LOT of receiving options. Walter on the other hand benefits because AJ pulls double coverage, and OD appears to still be recovering from his injury.