Finished my first build, it turned out prettier than I expected honestly. I got a diodeless kit because I had never soldered anything before, it was quite a fun learning experience. Also my first mechanical keyboard, I'm really enjoying the feel of the keys (Kailh sunset).
I was really worried about adapting to the column-stagger, I've only used the regular row-stagger before, but after one hour of practice I was already typing at about half my normal speed, so I'm pretty happy.
I do feel that I need wrist rests though. not sure how to fix that yet.
Not medical advice
I would actually advise against wrist rests especially while typing, they are obviously ok for resting but if you don't feel comfortable i think you should at least try a little longer as it probably means that the necessary muscles in your hands are weak and need to develop first. But it may as well be a personal thing so definitely get them if you cant go without.
I've been using Logitech ERGO K860 at home before this, so maybe I've just gotten used to the wrist rests. I've noticed that I lift my wrists into the air when I type on the Cantor, so I thought I needed some support. It's actually not uncomfortable and I don't type a lot, so I'll take your advice and try a little longer with this setup. I'd honestly really like to avoid taking up the space on my desk, since I like to write on paper.