I'm having difficulty finding options for renting for 4-6 weeks. 

You'll get all the money and none of the risk of someone who has no skin in your game from wearing out the house.

Feel free to reach out, I would love to learn more about why you chose this industry and the success/difficulties you have faced.

Typically though any PML is going to want any partner in the deal to have skin in the game, otherwise they're essentially a buyer/flipper and that's a different value proposition.

I am using the bigger pockets rental calculator, and I am having some difficulty on the loan portion.

If they want some cash out, you will need to search for a bank or other lender that would be willing to lend to someone with no skin in the game. 

Hi @Masood Amin, when he talks about that, he is referring to bringing on equity partners that will cover the down payment.They bring the money and you bring the deal.It is better if you bring some money to the table so the other partners know that you have skin in the game.As for how to get a loan if you have a down payment, you will want to use a DSCR loan.This is where you get qualified based on the income generated by the property, not your personal income.If you would like a referral to a DSCR lender, feel free to ask.Hope this helps and good luck investing!

If it is a major re-build it could take a couple weeks, and with supply chain difficulties, much longer2-5) Your departing tenant should not be expected to make the unit as clean as you would for an incoming tenant. 

Make sure the tenant -buyer(TB) has skin in the game.

The difficulty with the BRRRR method is two-fold.