So my new build entails building a Campagnolo 11 speed titanium bike. I have an 11 speed Athena group from 2010 ready to go right now. I just ordered a Moto Ti with full SRAM rival. I do not yet have all the parts to make a full switch and I'm pretty much out of money. I was planning on just swapping the Rival for the Athena right out of the box but I'm considering just riding it for awhile with the RIVAL groupset.

How much of a hit would I take if I sold the groupset new as a take off vs slightly used? $200? $300? If I divided that figure by the amount of times I'd actually use it, it doesn't really make sense. But then again, I'm out of money and riding Rival out of the box sounds pretty sweet. What would you guys do in my situation?