Spend money on lenses or body

I've decided Olympus micro four thirds is for me, I like the look of the EPL5, but for about the same money as an E-PL5 with a kit lens I could buy an E-PL3 + a couple of good prime lenses (Panasonic 20mm f1.7 & Olympus 45mm f1.8).

My main subject(s) will be the kids, quite a lot of indoor shots probably and hopefully lots of smiling faces - I anticipate only occasional video.

Any thoughts on which way to go?