Before I conclude my post, here are a few things about me: I currently work as a Flight Attendant for a major airlineI trade equities and derivatives on the stock market as a side jobI am a commissioned Notary Public within the State of New YorkI am currently working on obtaining my Real Estate LicenseI love the networking aspect of real estate.

Valuation on 1-4 unit properties is derived from comps.

You could buy derivatives with a leverage of 80% but the positions are short-term and it would require you to be an active trader keeping a tab on the positions.

When I analyze a business, I derive that primarily from tax returns but also scour P&Ls for "add backs". 

It may be that income derived from a note can be spread over years rather than hitting all in the sale year (to be clear, I am NOT a professional, NOT giving tax advice, yadda yadda yadda and so forth). 

And, bam, that shifts her into the same category as seasonal workers and part time workers (there are no more "Stated Income" loans, we have to go off of what HR puts in writing), which in turn triggers the long term 2 year average derived from when HR put her in that part time category, which I'm speculating here may very well have been 5 months ago, or some other period of time less than 2 years ago. 

Yes, that's enough of a deposit to borrow another say $150k (unless you're really gung ho and want a ~95% primary mortgage), but then that brings into focus your DTI as it relates to how much income you'll derive out of your newly refinanced ~$335k investment loan - together with your yet-to-be-approved hefty new primary mortgage debt.For your sake, I hope you already have very good assured income. 

I can derive that my monthly payment on interest only would total to $750 (300,000 x .03)/12  What would be the simplest way to calculate monthly payment on interest and principal ? 

I can derive that my interest only payment would total to $750/month (300,000 x .03)/12What would be the simplest way to calculate monthly payment that combines interest and principal and pay it all off in 10 years ?

Sometimes out of stupidity, but often because they know cash is king....This is good overall for the state of AZ, raising property values and revenues derived thereof, but I think it would be tough for a native trying to get their first house.....