I'm in a similar situation to you, just waiting to hear from insurance on whether or not mine is totaled. Glad to hear that you got a fair amount for yours and can pull off your parts. I'm also seriously considering a 5th gen leggy, prob not an LGT though. Good luck on the search!
If your buyback is low enough it would probably be worth keeping it to part out or sell. I just went through a similar situation a few months ago.
You have one lined up eh? Hard to find! What are you seeing for pricing/options/etc? I never quite trust book value...