A combination of dummy cameras and no trespassing signs could help deter the average trespasser.

Having someone in that niche on BP regularly to answer your question is going to be rare.

A typical example is a $330K Duplex, with combined $3000/month rent. $8K for property tax and $1K for insurance.

That combined with a price list my wife and I made for materials makes me feel comfortable with the number. 

And combined with depreciation, this allows us some great tax benefits.Because of the way loan amortization works, most of our interest charges are paid early in the mortgage and very little principal is paid until late in the loans term.

I plan to purchase more investment properties and I'm tired of giving a percentage of my commision to my managing broker does it make sense to combine the two and start my own real estate managing office and investment company?

A great book to read on this subject is, "the abc's of real estate investing" by Ken McElroy.This process has helped me identify a bad deal much quicker so I can move onto finding the very rare Great Deals!

I've analyzed 40 markets on their economic and demographic trends combined with housing affordability and ROI and both come up very favorably.

Something that is rarely taught in any faculty. 

If any combination of these things are true you can try to refi out of the FHA loan now with the equity in the place and then can use the FHA to buy the next place again.Of course you need to have enough equity to do that and even if you do make sure that it will cash flow with the new loan.