I work in a tire manufacturer plant and was saving up, working tons of overtime, all to invest.But after projecting forward it was going to take a very long time for me to get enough money saved up to invest in anything outside of lower end stuff (I don't want lower end properties and headaches that comes with it)So I changed my thinking into how can I make more faster.

For the $7500 as long as you still have adequate time building your brand and networking then self manage but I think you can grow your portfolio faster by hiring a mgmt company and focus on acquiring new deals and raising capital for them. 

Until those houses are paid off, and they will be paid off much faster on 15s than on 30s, you are short cash flow.  

Your future TEAM members.Research Notes, Land, Self Storage, Industrial, Retail, Office, or other real estate asset classes that you maybe interested in.Lots of other ways to take bigger uncomfortable steps to get to your goals faster. 

If you are just starting to climb the real estate investment ladder, the tendency is to go after the smaller deals first with hopes of building up confidence and your bankroll for your third or fourth project...so keep that third or fourth project in mind right now and get a larger than needed LOC. 3.

@Kathryn Stevens As a licensed contractor I am not looking for bonuses to get done faster .

.- Use additional income to pay down these properties much, and cash flow much faster/heavier.- Hardmoney lend to a flipper.

It helps to build up your network and get educated faster, and you may end finding future partners for potential deals. 

In my mind this protects the downside (of losing your home because you can't pay the mortgage) and allows you to take more risk and invest in properties faster.

I am able to find prefab options around the same price which will be completed much faster and with much less headache.