Originally Posted by
rollin
The CAAD is not only for crits, ride the hell out of it (when you can)
If you are convalescing with a back injury then the last thing you need is a TT bike
If you can’t ride but are concerned about the size you need then do one of the online size calculators such as competitivecyclist.com. Once you have this you can decide on the refund.
The bike shop should accommodate you on changes but 300+ miles is a long way to go.
Oh and as someone who is expecting their first kid in a month I am concerned that I will be buying them “presents” until they are 50+!! 
Happy recovery.
Lol ....... Don't worry, I am 47 and for my last birthday I got two furnace filters and a pack of paper towels from my mom. I think that CAADs are the exception rather than the rule as far as presents go.