I've been selling products on ebay for some time, so I have some income coming in.

@Jen Harwood Kaleena Schumacher with Avidity Insurance are excellent, good luck! 

Its an excellent resource.I am a Realtor, Investor, and Developer in Southern Maine.

I am the product of a failing school system.

Any kind of real estate that has been held with the intent of holding for productive use can be sold and exchanged for any other kind of real estate that you intend to hold as an investment. 

@Omar Khan I've dug some more into IRR and its starting to make more sense, I'll be fussing around with excel to make sure I have my head wrapped around it over the next couple evenings.

I used SiteLink for my facility and it was an excellent package. 

I have excellent credit personally and with my business, and my business (real estate brokerage owner) has great income. 

BUT your down payment is SIGNIFICANTLY less than any other loan product....well, almost any other loan product. 

You cannot 1031 into properties you already own or to pay down a  loan on a property you own.You're lender is probably giving you a partial release when you sell in exchange for a certain % of the net proceeds from the sale of the one unit.While it is conceivable that you could do a 1031 on this sale I think you need to look closely at the issue of intent.  1031 is only available for properties you have purchased with the intent of holding for productive use.