"SIGH"
Kevin,
I really do wish the all the best in your gunsmithing venture.
I don't know what the gunsmithing laws are like in Canada, but here in Stateside, they are DREADFUL!
A licensed gunsmith has to procure product liability insurance to practice his trade. That includes any aspect of working on guns, refinishing, stockwork, accuracy work, ANYTHING!
That alone can kill all incentive to "build inexpensive customized rifles". The federal, state, and local laws make it ever more difficult to have a gun-related business. the Federal Firearms license opens your home and business to law enforcement inspection at any time. The mandatory record keeping is a full-time job alone.
I've spent much of the last 7 years traveling all over Canada in communities large and small, and found that so many gunsmiths have changed employment, retired, or simply quit the gun trades because of the restrictions on gun ownership and the record keeping required. The few gunsmiths that are still available either work for a large, established shop, or are on their own in small towns.
The number of gun shop licenses have decreased from over 600,000 in the early 1980's to fewer than 100,000 in the last couple of years. Most of that from the federal licensing fee increases and restrictions on FFL ownership.
Things are not as bad here and in Canada as in the UK, where you have to have a gunsmithing license to purchase a chambering reamer! The rules can only get worse.
Again, best wishes on your gunsmithing career.
HTH
John