You might consider the standard Prindle 18 or even the 16. I've had both. They come without boards, so one less thing to deal with. They tend to ride well on the water, not quite as prone to pitchpole. Being boardless, they won't point as well as daggered boats. They are also good beaching boats with hearty hulls. I mostly sail solo on my 18.

I rig the mast using an EZ Stepper, which is fairly painless.

However, I can't right my P-18 alone without a tool. I tried bags which didn't work for me. I have had success with Gary's Solo~Right which I recommend. I did have a friend who could right his P-16 alone, but he was very, very strong.

Plenty of parts available too.

Sheldon
P-18