While the prices of home are low, rent yield is still strong making you feel more confident in achieving those cash flowing goals. 

I am actually planning now for when my kids are in/through college and I am able to target larger multifamily projects in a wider geograhical area. 

She would become my tenant, and I am targeting a 2-bedroom, 2-bath townhome if possible.

There are multiple strategies that you can use on mobile homes to achieve your real estate investing goals. 

For me, I'd rather have fewer doors owned outright that allow me to achieve my personal financial goals than having a large number of doors fully leveraged with less cash flow per door.

At the time there were limited 3 BR rentals in the neighborhood, but achieved such high rental rates the properties ended up performing better as rentals than as a for sale project.

I have seen some realtors who have used marketing targeted to 1031 investors as part of their regular outreach. 

Also in close proximity to micron are more rural areas, like Phoenix (13135) and Lysander that could likely be targets of development in the coming decade.

Cross border taxation is very complicated, most developed countries like the US and Canada have sophisticated systems to ensure their residents pay taxes, and you are not likely to be able to achieve your goal of not paying Canadian taxes on Florida income while a Canadian resident. 

Congrats on buying your first investment property—that’s a big achievement!