I know you are on a budged but some of these things you should have while out there. A paddle
, vhf, small compass, fish finder, bait tube or bait bucket, regs require a landing net, might want a gaff, you also need a pfd required by regs (dont have to wear it just have it onboard but I suggest wearing it), pliers, a good knife, rod leashes, some kind of signaling device (whistle, air horn, etc), fish grippers and a red flag for the back of the kayak if its sticking out the back of your vehicle more than 3 feet.
Just something to think about. Good luck out there! I have a tarpon 140 and I love it. I think you will like the 120.
Also check out the diy innovations thread on here. Might help you out.