Getting back into flying - Canadian licence in USA?

[spurcap]

So, I got my private licence in Canada in 2008. Shortly after I got an FAA private certificate on the basis of my Canadian licence as I was thinking of flying while down in the US but never did. After about 2010 I never did any flying - life got in way (aka lack of money). Now, I want to get back into flying but also live in the US now. Trying to think of my best path forward keeping in mind I will plan on flying only N-number airplanes. I have read as much as I could but can't get a straight answer on what currency requirements I need to meet....

TLDR -- flying in US on basis of Canadian licence - do I need to meet US or Canadian medical and currency requirements?

In more detail, thinking of the following ideas:

Option #1 - Get current again in Canada - I understand I need to re-write PSTAR, get new Class 3 medical, and one way or another spend enough time in the plane with an instructor to get competent (I would prefer this to be more or less time). It is unclear to me if doing this in Canada would get my licence current again and then allow me to use my "based on Canadian licence" FAA certificate to fly in the US?

Option #2 - Unclear to me if this is the case, but it is possible that to use my FAA certificate I need to meet the US requirements. My reading is that this is a BFR (flight review) and a FAA 3rd class medical. Perhaps the fact that I am "not current" in Canada does not matter as it is actually the US currency and medical requirements I need to meet. If this is the case, Option #1 likely does not allow me to legally fly. I can't figure out which of these is the case and have read conflicting information online.

Option #3 - The most costly but legally clear .... Time is time that I have logged getting my private a decade - I get 3rd class FAA medical, I go to a flying club here, attend ground school, write the FAA private exam, do as much flying as needed to get ready for the FAA private checkride, take checkride and get a stand-alone FAA private. The ground school part of this would be a good refresher and not sure how much additional flying time I would need in this option vs. just flying anyway for the sake of being safe and getting the club comfortable in my flying anyway. But obviously there are some hoops to jump through (1 written/1 practical exam). If I follow this option, I can always come back to Canada and take a medical, write PSTAR and do a flight review if I wanted to fly "C" airplanes. If I were regularly flying the US this checkride would likely be more of a formality than substantive like it would be in Option #1, I Expect.