I think it is important to buy a bike you REALLY want to ride. And if getting it in the right combo (paint, graphics, component group) now is important to you, then I would not want to discourage you.
That said, the best advice regarding bike purchasing is to buy what you can use now as a beginning cyclist and leave some head room to grow. That would suggest that the Tiagra component group is the best group for you. The Claris group being possibly too "basic" and the 105 group being needlessly refined (for your purposes).
PS The Sora components are worth keeping on your radar.
Disclaimer: I own both Tiagra and Ultegra equipped bikes.