Two full-size RHIBs are definitely nice, I'm just wondering if I'd want to devote so much deck space to them on such a small ship. I might think about trying to nest them somehow, or stash a little baby inflatable somewhere else.
Not that I'm declaring myself an expert on the matter, but I wouldn't feel the need to have anything other than a rudimentary man-overboard boat when the primary boat is off boarding somebody, or something.
I would just go for one large and one that can in a couple minutes be inflated, but are stored "flat-packed" (A IKEA RHIB). But it all depends what task the boat is doing. But for me she is an Heavly armed OPV, designed for different task an OPV but "can" do "some" OPV task's.