However as a new real estate agent I’m not sure if I should use my own license and purchase a place there (save the commission) or if I should seek a local agent who is more familiar with the Windsor area with links to lenders and contractors.

You always run the risk of them simply signing without actually reviewing everything, especially if they are not disinterested, i.e. they get a commission if it goes through. 

The monthly splits/ commissions etc can very heavily by each brokerage. 

Also, if the commission will be the same regardless, and the only one who benefits is the listing agent (by not having to split commission with the agent representing me) then I might as well get an agent, right?  

Usually the determining thing is whether you are receiving a commission.

do you have to get approved by the NC utility commission to bill?  

Also, is it possible to get the buyer side commission from the broker if I’m not licensed here?

Bear in mind also, if you please to offset some of the costs against your income, you will need to check with a good accountant here in Australia, as I believe this offset could only be against Australian income and if you move back to the US, then you will not be able to use any offset benefits of negative gearing.Even if you head back to the states, over time, particularly in Australia this property (if in a good area) should appreciate considerably and in 10-15 years will be an excellent investment for you and your daughter.Selling in Australia, particularly soon after purchase is quite expensive with commissions, stamp duties, taxes etc.

Also do you like the people you are meeting in the office is very important.One of the companies I interviewed even told me that as long as I did a company sale first, I could do two sales for my personal investing without any commission requirements.

As long as the first one is cash flowing, it is going to help make payments on the second one. you will be out commissions and closing cost on both the sell and the buy.