I skated in custom Bauer's for over 10 years until I switched to True for my most recent pair - lost my ability to get Bauer's at cost so I moved on.
It's been about 4 years since I ordered but I used to just have my local shop ask the Bauer rep for the most updated excel spreadsheet for pro custom skates and I'd put the same info from previous, maybe just update the liner and holder.
The key back then was have someone who really knew what they were doing and how Bauer would do things fit you, at least on the first pair, to get them right.
From there, I would reference my previous order versions in the comments and ask to add 1/2" to the facing between eyelets 2-8 on both skates to increase volume in the forefoot, as some prestocel on the ankle padding/donut padding on one of the skates to help heel slip where my heel was probably slightly narrow for the skate, reinforced eyelets, etc.
You either need an experienced fitter, an experienced rep, or to be able to chat with customer service people (could do this back when they were made in St Jerome) to get what you want dialed in.
That said, that's how it was back then as recent as 2020, I have no idea how much of that is/isn't relevant anymore, but I'm not sure how well some of the big box retailers are clued in to any of that, if they have any idea at all.