Mike, the reason it seems like some of us are beating a dead horse is that weāve been through exactly the situation you find yourself in and you might say that we learned maybe the hard and more expensive way. Celia makes the point that eventually and probably sooner than you think, you will encounter conditions that might rapidly become very threatening in boats that arenāt up to dealing with what you find yourself confronted with. A very large part of being prepared is your ability and that mostly comes with lots of experience, but even practiced experience will still have you in a bad fix in boats that just arenāt right for conditions.
A long time ago, I had my first rigid kayak and thought it was my ultimate do-it-all boat. It was a very well built 13ā-8" boat that has a nice cruising speed. I had taken a paddle up river with the plan that it would be easy to come back downriver on the return trip. It all seemed like simple logic. Things arenāt always that simple. On the way back downstream, the tide had changed and was coming in with a vengeance and had a strong wind helping push it along. As I paddled along, I soon realized I was not gaining ground and no matter how hard I paddled, I was just maintaining my position. A quick calculation in my head told me that the tide would be running in for many more hours and I would be out there in the dark and probably worn to a frazzle. I was able to find a way to finally make headway, but it was still a very hard slog to get back to my launch site.
That experience was not the only one that brought me to where I am now, but it might have been the beginning. I now own four kayaksātwo of them are extremely capable all-conditions sea kayaks. Believe me, there is nothing like having a boat that you absolutely are sure will get you where you want to go, no matter how hairy it gets. Even better is that the boat does it so easily that big waves, strong wind and whatever else is going on just adds to the fun.
You might not think that speed is all that important, but I assure you that it will become important as will the overall competence of the boat and the operator. The operator will improve with lots of practice, but a boat that lacks certain characteristics will not.
This is my longwinded way of saying donāt be surprised if you get the bug real bad and sooner than you might imagine, youāll be boat shopping again and maybe again. You might stave that off a bit longer by being very careful on the first purchase. Good luck and happy paddling.