The main reason I do not participate today is my local plan administration is slow, taking 2-3 weeks to schedule the initial inspection, then if something--even a very minor problem--causes the unit to fail it takes them a week to re-inspect. 

It slowed his growth focusing on the smaller properties

If you kept your full 401k invested, and the mutual funds happened to yield 6.5%, the incremental $50k left in the account would appreciate 6.5% and it too would be fully taxable when withdrawn.If you borrow $50k, you pay back the 6.5% and it too goes into your 401k and is taxable at a later date when you withdraw.

I came on to BP at a time that I was slowing my acquisition rate.

When I was searching, the IRS website said to refer to PUB-A for early withdrawal rules. 

I just finished the BRRRR book and would network and make some moves so I can do the get rich for sure/slow approach.

The market seams to be slowing down and I fear I've missed my window but my renters are just now moving out and I need to do some repairs on the place.

Market slowed down right when listed Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

If I get hired and they need me immediately I may not be able to wait for a slow moving sale. 

I get endless offers by reputable wholesellers so there is no problem to find these deals.Most flippers get caught by the market slowing down.