Your option A involved incorporating a Canadian company and moving to the US. My comment was on your option A. It is extremely painful to own a Canadian company and have USA tax filing obligations. If you absolutely must do this, make sure your company’s fiscal year falls on the calendar year boundary. I found the reporting onerous and chose to stay in Canada.
Oh yeah, for option A I meant to just stay in Canada until my company hopefully gets profitable and then "transfer" it to the US and move to the US if somehow I can self-sponsor/sponsor through company.