Well, a realtor and a lender already insinuate that investing there is great so it must be

Well, there’s been posted attacked and taken down that was a lot more mildly worded than this.

You will get to keep your low mortgage interest rate on your current property, and will still be able to use the benefits of a primary residence (lower down payment, lower mortgage interest rate) on your next purchase, as long as you have stayed in your current home for 1 year or longer (and there some exceptions to this as well). 

I'd like working with him so much, I got my license after this project and joined his team : )

You can also use FHA with 3.5% down as well although may be harder to win in a more competitive market.

And a lot of start-up companies are migrating to this city as well because of the OSU campus that has thousands of talented students graduating and looking for positions locally.

Having a system tailored to real estate investing and doing everything I would want a bookkeeping system to do has made the financial information I have much more accurate and timely.

It does take about 60 - 90 days on average to close an assumable loan deal, but it is WELL worth the time if you are not in a hurry. 

If a deal doesn't work if you have 3-4 worst case scenarios in plumbing, electrical, etc... then it wasn't purchased well enough to make it worth the time and effort. 

If you have a property manager you are working with, they might be able to assist as well!