If you make six figures, then i'm guessing the only stumbling block is your credit score.

As for the original post, I think something like this works best if it is concrete: dates (say the last week of July and December), monetary consideration (I would suggest a separate sublet provision wherein you pay them for use, rather than working out rent credits), insurance and liability requirements, etc.

For example, my ad will state whether we accept pets, that we want provide income around 3x the rent, and that every adult must pass a credit/criminal screening.

To prepare, focus on saving for a strong down payment and maintaining a solid credit profile, as both are critical for competitive financing.If possible, look into FHA or conventional loan options for owner-occupied properties, which may offer favorable terms, especially for first-time buyers.

STRs sound like too much work to me.Portfolio income = stock dividends, interest income (from banks, credit union etc), Master Limited Partnerships (Form K-1), Business Development Companies (Form 1099), bonds, interest earned from investing in a real estate debt fund, interest earned from being a private lender

I still need to get more properties by using conventional loans and develop a more stable business credit before doing LLC. 

Question regarding Internet services for a Duplex.  

You can also structure your offer with I know at least a 2% seller credit so that you can be paid at the closing table when you're buying. 

Do you have credit cards with places like Lowes and Home Depot that you can use to buy materials now and not need to pay off for maybe 90 days?

Vetting tenants is essentially the same as regular tenants, but expect lower credit scrores, bankruptcies, etc.