Hello,
House hacking is a great way to start. I think you have the right mindset. Speaking of having a good US credit score, that takes only 6 months after you purchase your first credit card as long as you pay it fully every month.
To qualify for traditional loans, one does need two years of W2 history, you can find an expert online to check if the job in Canada counts towards getting pre-approval.
Florida is one of the fastest growing states in recent years, I strongly believe that investment there will make you good money, I personally invest there. However, in the beginning, I strongly recommend having contacts and the support of experienced experts. Yes, it's best to learn by doing it, however, doing it with a mentor saves you immense time and money.
That's how I started, and if you want, I can provide you with the contact info of some of the very educative and transparent real estate mentors I know.
Good luck,
Ruchit