For example, if you only have an excess of $1000 each month I’d say you need larger cash reserve than if you’re pocketing $5k a month.

And they only work without thrashing the US dollar because the US dollar is the reserve currency of the world.

Since co-ops oftentimes require 20% down payment plus 6-12 months reserves (after closing), this can amount to over $80K in your $350K purchase price scenario.

For example, we can extract the Reviews data from review emails, Reservation data from New Reservation emails, Payout data from various Payout emails and then feed it into other apps or databases. 

So my question is, how much reserve do you generally put aside for vacancies?

Buy real eatate and wait.As long as the numbers are working, you have reserves and you are not oner leveraging yourself you are golden.Best of Luck!

Get all the details and purchase amount and then go shopping.As far as limiting your ability to buy an investment property, typically I say you need to plan on 25% down for the next property, although there are investor loans perhaps at 10% down if you have great credit and reserves, but you will likely pay higher interest for those.I like also and agree with what @Sasha Mohammed posted above.

I've thought about buying some to have on reserve but honestly I don't want to deal with moving them around.

If the co-op's income, DTI, post-close reserves requirements are strict, this can immediately eliminate most of your interested buyers.

There's not enough spread for a wholesaler to JV, and I'd like the cash influx from the flip to have reserves to pay my crew.