The past is not indicative of the future.

I also learned how NOT to screen a tenant and what class of property to NOT buy (for me in the future).

@Dorian Gray - I think part of the answer to your question depends on the likelihood of needing more funding in the future and if you have another plan to slowly build up reserve funding.

As the legally required small print in the offering of financial products reads: "Past performance is no guarantee of future performance".

My current monthly mortgage payment plus projected future mortgage payment (2900+2900 = 5800).

How are you going to scale your future investments?

If you start doing subto and other types then many will not touch that because of potential recourse in the future. 

Many lenders include a prepayment penalty  that lasts 3-5 years, which could limit your ability to refinance again if rates drop in the future. 

And if you sell the house in the future and have qualified for the Section 121 exclusion, you can exclude up to $500,000 of gain if you are married, and $250,000 if you are single. 

Considering the more lenient US laws compared to the UK in contracting.Again, thank you so much for your reply, perhaps we can connect and see out opportunities in the future!