Actually we have a lot of boat name threads already. You might want to search out and find a few. Personally, I renamed two boats. Both because I couldn't stand the names. I regret not renaming the boat back to it;s original name as I liked it better than the one I picked. The second boat had a name based on the name of the company the owner sold to buy the boat. To him it make sense but not to me.
It may not be lucky but when you spend that kind of money
you can overcome it. Plenty of decent renaming ceremonies out there. Great excuse to get drunk at the dock
with friends and family
after you get a new boat.