And that ratio can offset another investment that might be a low cash flow to start.Pigs get fat, hogs get slaughtered.

And since his client only has a month left on his lease, there is no way you have the time or desire to execute a new amendment to his lease.So, his client will be under the existing lease, you will post his rental, and file in court as soon as you can in your location. 

Over the last year or so, I have been soaking everything I can in real estate.

Well there you go, you're instantly dealing with someone who can know the ins and outs of renting better than a landlord - technically this can fall under a barter system and turns into "Nope- I made them x,y,z and we were square on rent last month" - never accept anything (and if you're dealing with certain tenants they will try to give you just about anything they can in being 'nice'- nope all for a reason haha) but funds at any time would be my advice and the full amount due. 

My first time getting up on the roof since they've begun renting, and there's greases and fats all over the place.

@Kenton LeVayI read somewhere that I should go to as many lenders as I can in the timeframe of 2 weeks-ish to avoid my credit being impacted?

Practice this as much as you can in the beginning so when the time comes to buy you are ready and confident.

It's tax deferred money, so I dump as much as I can in there and it doesn't get taxed, win win! 

There is a saying: pigs get fat, hogs get slaughtered.

They will do everything they can in their power to find you that deal!!