30, I don't know, 20 for sure. It may be a little heavy for 15, like I said, but it really is just right for 20. The way I'd do it is this-
700XL- 15#
700L-20#
700M-25-30#
700M-40#
If I had a choice between the 700L and 700XL for light inshore, I'd say 700L but that's just me.
-Brian