I do BRRRR, but I use my own cash to purchase and rehab and then refinance to replenish my cash funds to do it again.

I'm guessing that would open things up to where I could borrow against house 2 or 3, pay off my HELOC, then use my HELOC for purchasing deals (then refi out and replenish HELOC)....

Do you buy in bulk and store in a centralized location, and pull/replenish as needed?  

Buy it, manage it well, and let the cash flow replenish your cash stash.

That doesn't even include cleaning supplies or replenishing the consumables

Refi's are part of what people refer to as BRRR - so the refinance of the investment property is just to lock in the long term commercial financing on the rental AND to replenish (pay down) the balance of the HELOC. 

However, it would also "free" up nearly $800 per month to pay down cards and replenish spent cash.

Also with Airbnb you will need to incorporate expenses for cleaning/replenishing whatever you do provide for airbnb. with all that headache in mind (+labor involved), is it worth the extra $300 per month (also note you'll have to pay for utility yourself if you airbnb)?

Someone collecting rents and dealing with evictions and replenishing the apartments with tenants could really be useful to me.

Friends please advise what I choose a debit card that I could replenish it from a Bank account in the online office, with a convenient interface and inexpensive service