Then replenish as needed before I put it in my pocket.

It sounds like you've done a version of Traditional Tom in the BRRRR book, and now have to wait until you can replenish your cash holdings to fund further deals.

I agree if you hit a astronomical amount in your reserve fund I’d start moving the excess to other things like additional savings for other properties or if you are done buying properties start taking some extra cash in your pocket monthly until you have to replenish your fund. 

One advantage that I have being self employed is that IF I do take it our of my ROTH, and can always make fairly large contributions of about 25K each year to replenish it if I want to. 

Can your current rental income replenish it and still generate cash flow?

This is why many investors favor leverage as a means to scale (expand their holdings) vs. using cash, which takes a lot longer to replenish. :) 

The same way your cash is replenished at the end of a BRRRR ideally, so is a LOC.

I used to save per house and just keep it in my bank account but at this point im thinking about just keeping a lump sum x amount and if it goes down I just replenish it to a certain point. 

This money should be used to pay off your HML loan, HELOC or replenish your initial cash.

So, paying off the HELOC and replenishing your cash reserves