So, hopefully it almost never exceeds that and saves you the hassle of dealing with collecting a separate payment for the electric bill.

Read read read save save save it'll build confidence to.. have some money put aside and then pull the trigger...

Do I use a home  equity line of credit that I have on another rental at 6%  or do I use my  saving earning 1.75%?

Ideally, I am trying to transition out of the 8-4 work lifestyle for many reasons: I don't like feeling rushed in the morning and that's waking up at 4 AND preparing beforehand; My take home pay is not very much at all, making it a little more difficult to save/invest; I want to give more time to others and this goes back to my first point, but practicing gratitude more as well. 

Or will I just have to save for a 10-20% down payment for my next investment?

You could save labor costs and time working on site.

Save as much as possible and do the evaluations on properties every day. 

The monthly savings typically outweigh the additional insurance cost.

18.....Aside from that learn and save up money now if you can get a part time job so when you hit 18 you'll have the knowledge and capital to hopefully get into it.

Hello Jeremiah Gaviña Why not just save up 10k?