Caporegime
I just checked the only thing you lose with choosing the Olympus over the Panasonic is the slightly faster DFD autofocus (which isn't that important to you anyway) and it being f1.8 rather than f1.7 (not noticeable). The Oly is probably slightly better in terms of quality at a guess looking at reviews - not sure if it comes with a lens hood though, normally they're not included.
I wouldn't think there was much in it, especially for your use.
I wouldn't think there was much in it, especially for your use.