Would it be frowned upon to use a seperate personal account strictly for the business until I get back to the states in about 6 months to phyiscally go and open a business checking account.

Was going for the best cost-of funds (lower rate)

Sara,I see this a lot and I always ask if you know you are going to refinance in the long run to consolidate the Heloc why not just do a Cash out refinance instead. 

If you’ve been active in the area, I’d love to hear your take—what’s working, what’s not, and anything I should watch out for.Appreciate any tips or advice you’ve got?

You're going to torpedo a tenant relationship over this?

Depending on the type of commercial you want to get into my suggestion is to go work for a company that does commercial real estate as learning from people who do it and getting paid at the same time is not a bad strategy 

If the leases end up in the realm of where we believe they will the value of the building will go up a good amount and we will have close to 1 million in equity.  

As others said send a cancellation and go from there.

from a laptop or mobile phone on one of my SFR's (internet must be hooked up, but most tenants do it anyway and like to be able to monitor the outside of the house remotely, even if there's nothing going on.)

Quote from @John Mason: best to go to fiverr some one can do it for a 100usd in 2 hours Ok