I explained to the seller that my offer contained a substitution of collateral clauses and I would be exchanging the note they held on the subject home with a note of similar principal and interest secured by a different property of greater appraised value.

George Washington acquired a significant amount of land this way, and shortly after acquiring such created SYNDICATIONS (he later used JOINT STOCK COMPANIES when they came into existence) to raise the capital needed for development.  

Equities, stocks, bonds, real estate, gold, silver and everything else is going to increase in nominal value but not necessarily in real value. 

If you are going to pay anyone to learn, you should ask someone who has experience in the market that you want to invest in to teach you in exchange for equity in the properties you will buy as a partnership.  

If I'm understanding this correctly it mainly makes sense if you either plan on holding the property or doing a 1031 exchange in the future?

It's possible it might not be a big deal if you'll keep doing 1031 exchanges but I always want to mention it as the "what-if" scenario if you get what I mean.

They came in around 30% cheaper than ES windows and were all stocked locally.

Security deposit amountYou can find plenty of examples by searching for "tenant estoppel certificate doc" or exchanging "doc" with "pdf" for more options.Here is an example and explanation: Sample EstoppelSome have a lot of legal jargon but this document does not need to be so detailed.

I need some kind of guidance/ mentor in exchange I'm ready to use my talent to help increase portfolio.

Houston is a great market with lots of potential, and it's impressive that you and your partners have made such strides since December.If you're looking to network and exchange insights, this platform will be a great resource to connect with like-minded investors, share strategies, and learn new approaches.