I agree with everything C-run, Bass, and Roger have said, but would like to know more about the future aspirations around river fishing. What rivers, what fish, what parts of those rivers ?
Also consider the weight of the boat and how you will transport, launch and recover it. A fully loaded Hobie Outback will run about 120#, but that's not so easy to move very far by hand, even with a cart. Banks and boat ramps are pretty steep when you are hauling back from the water.
And you won't always have a second pair of hands to help load it on the roof of your car, etc.