Congratulations and enjoy it in the best of health.
Plus you will be able to drive the car whenever you want instead of taking your time to deal with McLaren service when XYZ goes wrong with it.
Absolutely. That was one of the biggest considerations.
For example, one of the McLarens I looked at had a battery issue, and the battery had to be replaced. And apparently, the new battery was almost $3K installed at the McLaren dealer. Another McLaren I looked at had a very slight chip on the windshield... and it would be another $3K to replace the windshield and the wait time for the new windshield was several weeks.
I would be too anxious to drive the McLaren wondering what will break. And when something breaks, it would be such a hassle to get it fixed.