Sounds like a good plan breaking out
Personally though, I'd look out for a complete bike you might find a good deal off here. Then you can use it and upgrade if and as needed. If you're looking to build and buy all or most of the components off Ebay you'll probably end up paying twice what you should be able to pick up a decent bike for.
The irony is there's a few people profiteering from stripping bikes and selling the parts on Ebay. Quite a few bikes are worth more as parts on Ebay than they are as a complete bike. Then people buy a frame and eventually all the parts off Ebay to build it back up again
Having said all that, there's a load of TI parts here