You need to budget for this by setting aside money when you receive rent.

While we've had a fair number of clients pull off the full BRRRR and getting all of their money out, it's far more likely you're leaving $5k-$10k in the deal.I think that's pretty reasonable given you're out of state and not doing much to manage the process.

I’m unsure if changing out the filter is required even if next people don’t want to spend money on replacing the filters. 

If you want to get a great agent, you want to be able to tell them that you are pre-approved (and for how much, for single- or multi-family), have confirmed hard money if you are going to flip, and how much savings you have.

I ended up with more coverage and saved a ton of money.

Other family will typically step in and help you out.If you've got the money to buy, just find an older adult in your family, and make the pitch, "Hey, I'm looking to invest in real estate...

The LLC isn't necessary until you actually start making money. 

We BRRRR 8-10 per year and the flips supplement the money left in the BRRRRs.I personally care more about the location of the BRRRR rather than the money pulled out or the cash flow.

I live in Lehigh (save a ton of money that way) and I also own a single family rental in Lehigh that has great tenants. 

Time is in fact, money. 7.