I will be using a heloc from my first Property for the down. and possibly a 401k load for the rehab.

Those investments are managed by my financial advisor so nothing more that a couple of meeting a year to do.In your case I would off load anything that does not meet a minimum 1% rule, maybe 1.5% since having them paid off is producing a extremely low ROI. 

A gold agent is worth their weight in gold, a bad agent will just make the whole thing go a lot less smoothly

Ive been doing loads of research and I just find the real estate investing world to be fascinating.

Paid off rental properties is the lowest possible ROI  and as we all know owning real estate is a major work load that actually prevents you from ever retiring.

And the course I took was online for 100 bucks....That being said, I do know a few agents that are worth their weight in gold.

I've seen a more severe break when a loaded concrete truck rolled over the top of the water meter box.

If you are dealing with an addition built on 12" beams (or if the original foundation is old and not built to current standards), the repair company might not be able to push the piers down to refusal depth or psi due to the beam not taking the load, thus leveling it, but not guaranteeing it will not continue to move in the future, thus not providing warranty.9. 

High rent area with loads of young professionals. 

You can drive and you have loads of (Time) on your hands, both of which, coupled with knowledge of this business from spending the time learning it are valuable things to bring to a business partnership.