foxwelljsly
Me too, I ate one sour too.
Just take the 50mm 1.8.I've never tried the 55/1.2, but I think the bog standard Zuiko 50/1.8 is one of the best normal lenses I've ever used. And the OP already has one
If telephoto is going to be useful, I can also vouch for the 135/2.8.
I used a 40mm pancake lens as a general purpose small prime with my OM1n, a great lens and absolutely tiny, but they're very rare and go for big bucks.
The 55 and 50 1.2's are quite a bit bulkier than the 50 1.8.