Hmmm...
Hanging a 100 pound dinghy off the transom of a 32' boat sounds a bit iffy to me. At 8', it will likely stick out well beyond the sides (port & starboard) of the transom. This could be great for snagging pilings and straightening out davit arms... unless the davits ripped out of the deck or the dinghy itself was crushed first. There is a lot of leverage going on back there with a 32' boat! A dinghy on davits also creates windage 'way aft, perhaps causing the boat to swing unexpectedly when you're coming in to a slip, (see "snagging pilings", above). The light weight of this dinghy is a surprise, given it's load capacity. Otherwise, I'd be concerned about the extra weight, hanging a couple of feet off the transom, tending to make the transom on a relatively small boat lower in the water and more susceptible to swamping from an overtaking wave. With concerns about smaller family members, it is apparent that you would not be out in conditions that might cause the dinghy to be swept off its davits by a passing wave. Two alternatives may be better options for you than davits. I've seen photos of cruisers who carry their inflatables "hinged" on their transoms. They rig a fitting on their transoms that hooks into a similar fitting on the inflatable's transom or stern tubes, and then haul the bow of the inflatable up to the backstay. They've got some windage there, but it doesn't stick out to the sides where it could snag pilings or other boats. The other option would be a hoisting bridle that would enable you to hoist your dinghy onboard more easily and then flip it. A three-point bridle usually works the best for this, but it depends upon your dinghy. We have the same problem, and usually end up towing ours because it doesn't fit well on deck.