My experience was different a few years ago. I used their template, talked to the tech, and gave them half my check (around $400). Broke the boots in properly, wore them on project work and PT hikes, did my training rappells wearing them (helitack aka 'dope on a rope' wildland firefighter). Wore them on project fires, wore them a lot, and my lil feeties were never really happy.
Kept my first year engine slug $100 red wing irish setter boots as 'back-ups' and the day I washed off a blister from the dreaded White Bite after 4 days on a fire I started wearing my 'red' boots again. Felt like moccasins after wearing the whites, and I could still hike/ rappel/ fight fire. Much more comfortable to sleep in on the hillsides, or slip into if I racked out on flatter ground where I could take my boots off.
I've seen people happily pack-test in Whites, but they just don't work for me. Put them on again a few months ago for a thing I was going to, working the pedals in the 60 reminded me how ski- boot-stiff they are.
Go to any good outdoors store & tell them what you need, they'll point you in the right direction.
Gaiters & Whites? weren't yours tall enough already?