He is big enough to deploy crews on several project at once.

Buying a SFR in the GTA will tie up capital that can be deployed (and accelerated) faster elsewhere. 

If passive income is the goal then hold, you could possibly refi to pull some cash out and deploy it into other deals.

PatienceWarren Buffet keeps cash on hand and only deploys it when it makes sense.  

I don't think 3-4 years is realistic, but maybe the 5-10 year timeframe depending on the growth areas and amount of money you are able to deploy.  

I'm a buy and hold investor, looking to deploy the BRRRR strategy. 

When you exit a deal, what normally ends up happening (like Tom Brady keep winning more Super Bowls) is that you go into two more deals (with now double the amount of capital) and you will likely find that with those new K1s you could result in you having way more passive losses you began with If you can see where this is going... yes, experienced investors with a lot of capital deployed might have 500k-1M+ suspended passive losses and have not paid taxes in years and do not appear to pay taxes for years!

I get home in December from my current deployment.

Or, as Travis mentioned, sell your primary residence and explore house hacking opportunities, which will allow you to snowball income savings to deploy into the next deal. 

I've read most of the posts and the best solutions are getting shot down by either you getting married and moving or not getting deployed for extra money or because you bought a single family property with your 100% financing VA loan rather than house hack.