Hi, Jack.
Let sort it out a bit.
First of all, if you want to become FI, you will need CPL first.
So for you it would be, PPL, CPL, CFI.
If you want to work in US as CFI, its better to go on F1 visa, that would allowed you to be in US for 2-3 years.
It will take around 8-12 months to do PPL, CPL, CFI and the rest will be instructing time.
Otherwise, it will be very hard to find job ther. You can not really work on M1 (only for like 1-2 months) and its very hard to obtain work permit in US.