Replying to Ski boots. Mounting and recommendations.

Probably a dumb question but should I wait to mount my new skis until I buy new boots? I’ve had a pair of Solomon spks since 2013 and safe to say they are ready to go. I’m 25 “type iii/expert” skier currently using a size 26 (wear a 11-12 shoe depending on brand) probably gonna go to Evo to get a full boot fitting, but do you think there gonna have me size up or down? Or is it safe to safe I’ll wear a size 26 after so many years?

Another question would be boot recommendations there are so many it’s hard to narrow down. I have long skinnier feet. Shred all over the mountain occasional park laps but not nearly as hard as I used to. Just having trouble narrowing brands down.