After this last bill is paid for we will be able to save at minimum $3500 a month.I feel that the HELOC will get us more funds at a faster rate.

If the numbers make sense you should be able to pay the note off faster then 20 years, but I would need to look at the numbers to tell you that. 

I asked her if she would be interested in selling that one first since it was a rental and would be a faster/easier closing than her own personal residence and she agreed.  

I have found those smaller 3rd party licensing places to be a lot faster and easier to work with. 

Even with an attorney which I have also used in the past it does not get them out faster. 

Also re-evaluate my strategies so I can scale faster and build up my network.

Most lenders flinch at anything less than $50k.I'd probably offer a Land Contract on one or two until you can bankroll the whole BRR in the future.

New builder developments have sprouted up and are being built faster than I can keep track of, mostly single family homes starting at $300k and mostly on parcels of at least 10-15 acres, they don't bother with smaller neighborhoods. 

Some of us are discussing at the sells to foreclose faster....2-3 years. 

So if you are comparing it against a conventional loan....then the HML will close faster but it will carry a higher rate.