Hi Dan,
The size of the object does not matter: both lenses have 1:1 magnification, i.e. a 17mm object will fill the long side of the frame. What is different is the working distance, that is, of course longer with the 60mm lens...
I do not have personal experience with the 30mm macro, but have both the Zuiko 60mm and the 45mm Panasonic macro. With the EM5II, that has contrast based AF, similar to your EPL-10, the 45mm Panasonic gives better AF performance, but with EM1II (has PDAF) both lenses work similar and o.k. I prefer to use the 60mm, because of the longer working distance that scares animals less, but only in very clear waters. I just returned from Egypt, where I was diving in the not so clear gulfes of Akabar and Suez (vis was 10-15m only). There I prefer the 45mm, as working distance is less and IQ is better in cloudy waters ...
Regarding you images, I would not take the macro lens for images 2,3,4 and 6. For them I prefer to use the standard zoom (Zuiko 12-40mm) behind a Zen DP-170. There I can zoom out as far as the animals allow (especially for 2,3 and 6 I would take 12mm), the images should be crisp clear and sharp, because of the short working distance and one could also include substantial amounts of background. I personally will not go for the 30mm lens: as I use macro, the distance is very short at high magnification, scaring animals and making lighting with flash difficult. At not so high magnification (as images 2,3,4, & 6), I find the standard 12-40mm zoom lens the better option...
Wolfgang