I have a few commercial loans that don't report to my personal credit. 

Mostly on trade accounts with local businesses for the materials, some business credit cards, some of the contractors were OK with waiting 30 days for payment. 

Demand for February/March move-ins should see a notable uptick sometime in January, but you'll for sure see your strongest rental demand in late spring/summer.Your most recent post mentioned that you were going to look for someone for a 6-month lease - I think this is a great way to approach it to minimize vacancy loss while biding your time until we get into the higher demand summer months.Getting creative with your lease term and credits/concessions could also be a good way to solve a few potential problems in one shot. 

What's your credit score looking like?

Speak to everyone.You might investigate a wholesale line of credit if you are doing enough volume.

Before you get too far, I would go talk to every local bank and credit union in the area you want to do this. 

Double taxation would be when you have to pay US income tax and then also Canada income tax and you don't receive a credit for your US income taxes.

You might want to check with local credit unions or community banks, as they’re often more flexible with second mortgages. 

We have credit scores over 730 and have been "soft approved" for around $750k. 

If you develop a great relationship with local credit unions, you'll be surprised by what all they're capable of.