This one is my size or I wouldn't be interested in it. It also has a Cannondale factory tag on it promoting the lifetime warranty which I'd verify before buying of course. That's one of the main draws to it compared to CL or anywhere else where my wallet is the warranty. I'd have to get it out for careful scrutiny first. Good advice and already planned.
After more thought, I may go in with something like $1563 in cash in a bank envelope as my absolute total bike budget and see what happens. That pretty much covers the $1499 of the bike plus the dealer cost of the extras so they'd just be covering the sales tax while also saving the 3% or so card fee. Worst case they say no.
Thanks for all the good advice and helpful comments so far. I appreciate it and welcome any and all additional.