I would first make sure the kayak could handle the weight. Between the person and gear it adds up quick and could be to much. I have the 10' Lifetime Tamarack Angler which has a 275 lb weight limit. With shorter kayaks they usually turn better but do not track as straight. If creeks are all your planning to fish then this might not be a big deal. I've noticed when on the lake I zig zag back and forth paddling but it's manageable. Would you want to stand any? Some kayaks make this easier and more deck space then others. I'm unable to stand in my kayak and sitting gets a little sore after about 4 hrs. Would you want to mount rod holders, fish finder, etc? Once again some easier to accommodate these things then others. Paddle, pedal or motor? Constant adjusting of kayak unless anchored is something to think about. Other options to consider.

Personally I find fishing from a kayak very enjoyable and I'm loving it. I can be so stealthy in a kayak and I'm also able to reach water normal boats can not. I wasn't able to purchase my dream kayak but hopefully one day I can upgrade. I purchased what I could now to get on the water and get fishing. When done I load into truck bed and drive off. No trailer, no taxes, no maintenance, no gas, no worries!