As we have 100+ year old trees on the property, as well as a pond and year round stream, I think it could also be used for a tiny-home or tiny-office (commercial) community, which would allow me to maintain control of my property long term and providing recurring revenue to me (my company). 

They're also going to struggle to maintain that much property without a lot of equipment they probably don't have.

This approach not only keeps tenants happy but also helps you maintain long-term cash flow by reducing turnover costs.

It's all about how much equity you want to keep in the house based on the Refi in order to maintain the 50% rule.  

Unless otherwise stated in this Agreement, Tenant shall establish their own utility accounts, effective no later than the lease start date, pay all utility charges, and maintain accounts in good standing.

To thrive in real estate investing, you must maintain a firm grip on your finances.

My policy is that we provide a pest-free home, then the tenant is expected to maintain it that way.

Though I have not written it in to a lease(yet) I would at least have a clause that the unit maintain clear access thru the unit to windows, entry, etc. 

I’ve heard about home equity loans and HELOCs, but I want to keep my money in the stock market to maintain some diversification.My question is: would it be wise to take out a home equity loan for the full $200k to keep my stock investments active?

You will have less to invest, but you will spend within your limits.You must maintain control of your finances.