Where you will be primarily fishing would have as much to do with boat choice as your size. I am not a small guy 6'4 and 260, and I was fine in a tracker alluminum until I moved to the ky lake area. The water can get nasty here so I needed a heavier more stable boat. Being your height I would get in all of them you look at and make sure you have plenty of room at the console. From what I have found my height is about max for most consoles without some work. If you find one you like I would definintely have the engine thoroughly tested, especially if it is an older (more than 5 years old) - if it is from an individual and not a dealer, you may have to offer to pay for the testing - but it will be worth it. Ask around for a reputable dealer that does some consignment. Jetta Marina here in calvert city always has a few boats that are on consignment and have great prices on them. If they don't they can help you find one.

Good luck and welcome the site.