Compare to the sitting empty plan, they get to deduct all taxes, insurance, utilities, maintenance, repairs, furnishings, etc etc.

First, percentages lie...especially when you compare them to the Stock Market.I can show you where a 15% yearly return in the Stock market, is blown away by a 5% return in REI. 

I found there are 2 pages more when I compared the new contract and the old contract.

I assume you did your due diligence when making an offer and assessed other comparables to gauge an appropriate asking price?

I know the market is at a high right now and am worried that if I want to sell it in 3-7 I will have a very hard time selling it and even lose money (just comparing the buy to the sell).P.s. this will be my first rental property and just want some words of advice. 

Then, compare that information with how you would anticipate managing the property.

@David Navidad I would see what you can do with the money you would get in either option and compare cash on cash returns.

I'm not looking for luxury and opulence (though of course, that would be nice), but 1) to be able to travel (better once we establish a new normal with covid), 2) quit my 9-5 job to be able to work on passion projects/non-profit work 3) feel comfortable having children in the future and not worrying about that financial burden and 4) establishing generational wealth.I live in Denver, which feels like a HCoL ara, especially compared to my hometown in Georgia.

@Zimean Vickers first observation is that your rents are very low compared to value.

Or assume they will get a job with comparable pay?