In my personal experience the Redcrest isn't all that great a design. They are very durable for sure (or at least the old, pre Zodiac
takeover ones were), but they are about the hardest of all inflatables to row. In fact, I suspect that they are largely responsible for the pervasive idea that inflatables can't be rowed. I think that it is because of the flat, unsupported bottom, small diameter tubes, high friction rowlock design and fairly short oars, but whatever the cause, they row like pigs.
So, then you hang a motor
on their poorly designed add-on motor
mount. On the one that I had, this applied a lot of torque to the tubes which distorted the shape even more and tended to drive the already low bow under any oncoming ripple, dousing anything in the boat. Grrr!
IMO, any of the smaller roll-ups would do you well... those with a rigid transom on which to hang your motor, and at least a little vee to the bottom. In your application the added expense of Hypalon is not likely justified, but will extend the lifetime over PVC.
There are lots of dinghies out there now... kinda a hard choice, so good luck.