The New Gen armor from Rogue One on is still very uncommon in the Legion, with only about 25 of us approved, only 2-3 makers of kits, and far fewer resources than the Original Trilogy stormtroopers (with 4,000+ approved)... I have not seen anyone consistently offering commissions on them at any level of quality. Most of us that have completed approvable builds are because they have been passion projects and taken months or years. I don't want to dissuade you, but you should be very cautious before handing anyone money. There are also no Canadian manufacturers of the armor, so it will need to be imported from somewhere unless you print it.
That said, there's no better time than now to learn a new skill and start your build, and while it could use some updates and I would have done a few things differently after gaining the experience I have, I did post my build thread here in the hope it would be beneficial to others. Know what you're in for, do copious research, and ask lots of questions! If I did it all over again right now, I would basically do what @MikeRadness did and collaborated with him closely during his build. He didn't post a build thread but his L2/L3 approval threads have some great info and pictures.
Also, Mimban troopers use the same base New Gen stormtrooper armor, but specifically fall under the MEPD detachment, so there may be more info over there as well when you're ready to get dirty. Good luck!