Bit late, so this might not be worth much now, but I use OMs a lot - I have one OM1n and three OM2ns. (I had an OM2SP but didn't like it as much, and haven't persuaded myself to spend the money needed for an OM4).
I'd go for the OM2n, because of the easily-available battery and the aperture-priority auto. I had my OM1n modified to take SR44 batteries, but it added about £50 (~$80) to the price. And I'd go for the n version simply because it's newer, if nothing else.
Good wide lenses? I have the multi-coated versions of the 35/2.8, 28/2.8, 24/2.8, and 21/3.5, and all are excellent. For general-purpose wide use, I'd say go for the 35/2.8 or 28/2.8 according to choice - which one to go for is something only you can decide based on your shooting style.
If you fancy a wide zoom, I have a 28-48 and I think it's probably the best Zuiko zoom I have.
Cheers,