Realization of wanting a OM camera. Om-1 holiday sale seems good? Also ..starter lenses?

I have been secretly wanting a OM camera for over a year now. I just saw the om-1 is only 100$ more than the om-5, this seems like a good deal? Not sure what I am missing bout the two or the difference between the two (besides what one can read in specs obviously). I want a camera that is built like a tank and I don't have to worry about some rain when doing lightning photos during our monsoon season. This seams to fit the bill and can maybe even handle more than 'some rain'. Am I correct here? Also not sure how much of a gimmick it is but their Starry AF, live composite, live ND, focus stacking and high res handheld all seem very interesting to me. I am guessing all M.zuiko lenses are weather sealed too? I had a short list of 'starter' lenses I would want:

12mm f/2 for astro photography. Maybe also a good landscape lens?

25mm f1.8 for portrait (and the nifty fifty).

14-150 f4 for the everyday zoom /travel.

Also the 60mm f2.8 macro seems cool, and the 17mm f1.8 as a 35mm-ish equiv (street photog) seems good too. Any other thoughts? Comments? Wondering if the 14-150 would be a good start to some wild life photography too?