Yeah, it's not difficult just be aware of the safety.

Plus, if you get AC drivers it's just the torrodial. Nothing else.

Doing it beforehand however is not your best plan, bit of a false economy because you'll end up with something that isn't quite right or you'll make compromises on the rest of the build to suit.

First, figure out what you want to cut. Materials, sizes.
Then work out your physical constraints on machine size.
Then find a similar build log and start CADing. As you come up against different problems look to other build logs for solutions then add your own twist. It's just not worth spending time and money until you know what you want and have speced it out across the board.