I have a 340 Airdeck with a 5HP outboard, could do with a bigger outboard but it will do for now
I've had 4 people and bags etc in comfortably.
The build quality in my opinion great. Although I agree with Tim you need two people to lift it into the water unless you put some dolly wheels. Possibly my next job.
You can download the manual from HERE
Which should give you the mesurements. If you want to know any specific ones give me a shout and I'll get my tape measure out.
It's a great little SIB