My two oldest have 165 university credits between them and we have not paid a penny yet in tuition. 

My credit score is 667, with no major issues and my salary is $93600. 

Things I have done:I'm researching possible areas to invest in, I have looked into opening an LLC where I plan to invest, open a business account and obtain credit that way but that takes time to build your business score, another option I can go with is use my credit cards to get a deal or ask family and friends to invest with me.

What you can afford is based on your current DTI (Debt-to-Income), your reserves (what savings you have eligible for a downpayment), your credit score, and then of course, what your future goals are (i.e. how you want to appropriately leverage yourself for future acquisitions).PM if you'd like to know a little more info.

I sell to the local farmers market and have plans to have a CSA.Real estate experience: I bought my first single family  rental property for $9000 cash at now brings in a monthly income of 550 then pulled a line of credit off of that house and purchased a duplex that had a single-family home on the same lot for $14000.

You didn't mention your credit score.

It seems a shame to toss that locked in 3.25% interest rate away, I would explore a second mortgage, or line of credit, and leave the primary alone.

The way I see it, I don't have any resources (or credit, yet), but I also don't have any responsibilities, so if I fail miserably, the only person who loses is myself, and I have plenty of time to recover.Anyway, hello everybody!

Then, that score "expires" because credit info changes constantly as people use (or abuse) their credit.

It will show on your credit as 1 tradeline.