14 foot is a little too small for being 2 up, depending on the size of the two. Once I get my lunch etc in there it'd definitely be too small!! My lad and I are 6 footers and our 15 foot works well. The old canoe adage is you can have lightweight, carrying capacity and toughness, pick any 2!! If you pay plenty money you can have all three!
A 14 footer plastic canoe hits lightweight and toughness, sacrificing carrying capacity
A 15 foot plastic hits carrying capacity and toughness
A 16 footer plastic hits carrying capacity ++ and toughness
For composites you get
A 14 footer hits lightweight sacrificing carrying capacity
A 15 foot hits lightweight and carrying capacity
A 16 footer hits carrying capacity ++ and is still reasonably lightweight
This is obviously a gross simplification, composites are pretty tough especially if you are only using them on flat water. Also, I think going solo in a 16 foot boat is too much like hard work to maneuver and to handle off the water, it can be done but it's just more work.
I have paddled a lot of boats and have settled on;
A15 foot composite boat for solo flat water work, can do two up day trips but would be tight for overnighters. Lightweight, easy to handle on and off the water
A 15 foot plastic boat for comfortable day trips, can do overnighters and is great for rattling down rivers. Pretty tough, not as good to handle off the water due to weight but a lot of displacement so a decent load carrier.
From what you are saying a 15 foot apache sounds about the best as long as you are predominantly solo and flat water. You will find them a little harder to get used to than a heavy plastic hou or venture etc but the payback is better handling on water. It won't be to hard to get used to it
My two cents, hope this helps