One thing to keep in mind is that you will not find many negative reviews on many kayaks, except maybe the tubs they sell at big box stores like dicks. I personally replaced my 2004 Hurricane Phoenix 140 with a 2019 Hurricane Skimmer 128 and while I did lose 16" in length, just some minor changes to the layout make it seem like a different company made it (but not in a bad way.) I would simply add that a lot of what you are considering doing and where you might be going must come into play with the decision making process of the purchase. Many would recommend buying used to start (but something I did not do.) After fourteen seasons I simply wore out the seat, fixed a leak and a broken carry handle, and decided it was time to replace (with new again.)
How will you transport the yak ? Will you need a goal post truck bed extender out of a hitch on an SUV or minivan, or carry it on a roof rack ? Is the weight a consideration ? Trust me, the trailer on which my little used Sea Pro DC180 rests takes up space in my driveway and I would never want to have to trailer a yak. Do you live on the water and hence hardly any of these considerations apply?
I suggest that if its convenient or helpful, visit a local dealer or two. On the south shore there is one in Oceanside, another in Sayville, and my "go to" The Dinghy Shop in Amityville. Ten foot yaks are more maneuverable but will not track as well as longer versions and depending on your size could be less desirable. Of course, increased size equals increased price and weight.
I am personally into "bare bones" kayaking... no rudder, no pedals ( we own bicycles, lol) but I did add three rodholders (one for my net) and a fourth to hold a safety flag at the stern. Which brings me into colors. I want the absolutely brightest color made to be seen. Hot pink, yellow and orange. Some,but definitely not all blues and greens disappear and red attracts boaters thinking you are a buoy.Two tone colored looked good on 1955 Ford Fairlanes but do not show up as well on the water either. My kayaks have had 28" beams, a nice compromise for stability and speed. (Our tandem is wider but with two paddling, who cares?)
I don't recall ever paddling without fishing, and an anchor trolley at times, used with a drift sock and not an anchor, has been helpful.
Hopefully some of the REAL kayakfishermen here will chime in soon with their thoughts. Their rigs are like battleships compared to my bare bones yak !