I've looked into it, but some of these properties are junk and these Gurus selling these courses or "you can use my guys" feels kinda scammy to me and probably make more in course fees than actual cash flow from their 100s of doors they supposedly have.

Plan B is that if I'm unable to refi, I'll sell off my only SFR and then I can pay off over 60% of the credit card debt and then I'll try again to refi.

I plan to build 3 houses on the land and build the house to sell or possibly rent. 

The architect and I have been thinking the exact same thing, with all the people looking to build/ live in this area we could sell just about anything under 500k instantly.

Long term I do see this property being a great asset so we don't want to sell necessarily.

Later on decided to sell it.

You might get them to do all the legal work to take it and then sell it to you.

Depends on so many factors: - What it yields- What you're trying to achieve- What headache factors you're willing or not willing to have - What tax implications come from selling (and if you have to replace your debt in a 1031 exchange)With 1.7-1.9mil that would be a 6-10 unit out here in Reno, NV that with cash could produce probably a 6-7 cap with upsides in rents. 

Or is the idea of a purchase to rehab and sell more appealing?

Look for an agent with a proven track record of successfully selling properties in your target market.