Everything I'm finding says 27.5 years due to it being rental income but others say 5 years because it's an RV.

You may find this a viable option with rates where they are, especially if your rental income continues to cover the mortgage.Home Equity Line of Credit (HELOC): If your property qualifies, you could use a HELOC to access the equity without disturbing the current mortgage.

If they pay late now as is, let's say they lose a job or have a temporary loss of income, you're kind of SOL.I would look to build reserves between now and August.

Another variable in the amount of rent that a Section 8 tenant can pay is HUD limits their rent payment based on the amount of their income. 

I don’t completely understand how I could best put my money towards a rental property or fund one with the income that I am making.

They’re a great way to generate passive income with minimal hands-on involvement.Looking forward to hearing more about your goals!

More on DSCR loans in case helpful: DSCR loans won't use your income to underwrite the loan.DSCR loans are based off of down payment, credit score and either actual or market rents so it helps to supercharge an investor's real estate goals and net worth.

FHA now allows us to count rental income from an ADU (additional dwelling unit) to help borrowers qualify.

That gives you options to expand, hold, or sell land if the income isn't there. 

Sometimes, there is also a tenant already in place which means you can start generating rental income from day one.