My FICO is above 700, but they want to see employment income.

Employers like to see focus.

Further, depending on your other income, the income from flipping may be subject to self employment tax.

Also learn about the vesting of your employer matches.

My challenge is, and has always been, that I forget things at a certain rate if I don't employ them so I must continually 'sharpen the saw' by reading, listening and applying my skills, as well as finding new ways to improve my systems for finding working and monetizing investments.Most people who invest in income real estate start with something smaller and manageable like an SFR or duplex.

I also try to independently verify employement.  

The NMLS has established a method of tracking and tracing  accountability of every single lending institution and the professionals that they employ.

Yes i have savings, and retirement savings, not fan of 401k at all, but I do have a couple of 401ks from previews employers nothing much maybe 4k total 

Im self employed, and have been the majority of my life, doing variety of different things.

As an employer, when payroll is processed, the employer withholds the employee's portion of FICA (6.2% Social Security Tax and 1.45% Medicare Tax) from the employee's paycheck and ALSO pays in a matching amount.