Be willing to mix it up based on the draft... but essentially, it seems like you have a good grasp on things.
I will get a backup TE if it's a good TE that can be trade bait later on. However, judging where you're drafting a TE... you might land a 2nd tier type guy (Heath Miller, Michmicheals, etc.). You're on the border.
Either draft a little early to get an elite TE, or move your backup TE pick much further up. If a Shockey/Heap/Gonzo/Crumpler is there for you in the 6th... go for it, if not, I'd wait.
A lot of owners overlook the importance of TEs... the fact is that they have made or broke a lot games for me. The absolute point total isn't high, but the VBD between my TE and the other teams TE can be quite high.