If you have commercial experience and are an excellent asset manager (managing the property manager, driving revenue, reducing expenses,  managing GCs)You wont just provide value to a sponsorYou will be highly sought-after after by sponsorship groups.The ones worth their salt know how incredibly valuable a strong asset manager is (and how much work it takes)So if you can bring that skillset, I have a feeling it won't take long for you to find a sponsorship team. 

Several emerging neighborhoods present excellent opportunities, with 32204 and 32068 currently being standout, high-demand areas.Best of luck with your search!

I need some suggestions on high ROI STR markets in the USA.

BiggerPockets also has a calculator to analyze deals, and I highly recommend you start this as soon as possible, even if you are not ready to buy.

From a few people I know that do STR in Bali, I can confirm it's highly profitable.

I would HIGHLY RECOMMEND doing the copper in the basement NOW since you are in the demo stage. 

I can only recommend taking this opportunity. 

BiggerPockets also has a calculator to analyze deals, and I highly recommend you start this as soon as possible, even if you are not ready to buy.

I would like to know which sites are reliable to do some market research on population growth, and income on zipcodes, and counties in Delaware.

Unfortunately, I don't think it's realistic that you will find a generic commercial lease online that checks all the compliance boxes for your state, city, and county.There are limited service property managers that will do retail tenant placement (rather than full property management, which it seems like would be overkill for this one commercial unit you manage), and this would be included as part of that basket of services.You could also hire a lawyer, but I think that property management company will be more cost effective.