I'll probably buy the Olympus lens

You can get it used for $53 from KEH. Who cares how good it is with the max zoom, it’s only $53.

I lied, that’s for four thirds, not micro four thirds. I’d need an adapter.

They don’t have the micro one. Well, Panasonic it is then.

The adapter would cost $160. Unless you don’t buy the Olympus branded one.