The size and type of dingy will have a lot to do with your personal preferences. An inflatable is light, but can be too light. I had a Zodiak that tended to get airborne when being towed, and then submerging. It didn't row very well, and I like to row. We had to sit on the sides and store our gear on the sole, which meant we got wet a lot. When the sun finally dried out the seams, the Zodiac died. I now have a Walker Bay with the optional flotation collar, which makes it a RIB. It is fairly light and rows like a dream, plus I have a sail kit that makes it a blast to sail around the anchorage. The collar greatly increases the carrying capacity, and we get to sit inside.
As far as size of the dingy goes, there is a tendency to think: bigger boat, bigger dingy. My Walker Bay is 8', and fits on the foredeck of my C310, and has enough carrying capacity for the two of us plus gear, or three adults. Maybe the 8 footer would fit better on your foredeck than the 10' 2" Achilles. I think you would find the smaller dingy easier to lift and stow also.