I must disagree with hbmcc' opinions as well.
My perspective comes from using our family navy over my life time. We currently have 7 inflatable kayaks, all form Aire. Our oldest is from about 1994 and is a single lynx. We have 4 doubles and 3 singles all together currently. We also have multiple rafts, a drift boat a 24 foot jetboat, an old town canoe, and some hardshell kayaks. A large navy in total.
First, inflatable kayaks are not bulky. For example, an old style Aire Lynx II, comparable to a new Aire Outfitter II, that the OP says is top on their list, would fit into a medium NRS boat bag that is 40"x25"x11". In addition to fitting that boat in the bag, you will also be able to fit in the bag - a throw bag, couple life jackets, small hand pump, small electric pump, a patch kit and some other small misc. items. Hardly a big bundle that includes all your gear but paddles.
Inflatable kayaks are easy to inflate. From pulling up to your put-in, it should take you 5 minutes or less to have the boat inflated and ready to go using an electric pump. Same for rolling back up at the end of the day.
Double inflatable kayaks paddle just fine as a single, and can haul a huge amount of gear for multiday trips. If you can't paddle a 2 person inflatable kayak as a single, then you need to adjust your seat placement, have a really crapy brand/type of boat, or simply don't have any skills at all.
Bladder integrity? That is a purely uneducated comment in regard to aire brand inflatable kayaks. I have never had to patch an aire bladder in the field after paddling literally thousands of miles. Does it happen, I am sure, but none our large number of Aire boats has needed this. Regardless, repairing in the field is straight forward if ever needed.
You seem to suggest that an inflatable kayak is heavier than a rigid boat. I am sure there are high end rigid kayaks and canoes made of really light and expensive materials.
A simple comparison by the numbers:
The Aire Inflatable Kayaks I recommended:
Aire Strike II kayak, 12.5' long, 37 pounds
Aire Outfitter II kayak, 12.5' long, 46 pounds
Aire Super Lynx kayak, 14' long, 46 pounds
Lets Take Old Town for a simple comparison with hard boats (I have a 14' old down canoe which I love).
14' guide canoe = 82 pounds
11' discovery canoe = 49 pounds
13' Discovery canoe = 78 pounds
Nearly all the old town single kayaks weigh more then the inflatable kayaks above, and their double kayaks all weigh considerably more.
There are pros and cons to all boats. The main real difference between a rigid and inflatable kayak/canoe is that the rigid will generally handle flat water much better.
Bottom line, Aire double IKs are plenty awesome and versatile.
Its an SUP
Its a Bed
its a couch
2 people in whitewater if you are skilled
or single whitewater