After reading all this, I wonder if the OP still thinks they can save money by doing it themselves?
It's gives experience that will last a life time, I think it's a very useful skill to be able to produce high quality work for whatever the occasion be.
If your reason for upgrading is to get better image quality I'll tell you this:
Your increase in image quality by upgrading from T1i to T2i will be practically ZERO...
+1, use your saved money to learn more and perfect your skills with lighting, composition etc.