With your budget, In my opinion I would suggest you look at some thing like a Brooker 410 Fisherman. you should be able to buy a package around 2005 possibly newer with a 30HP 2 stroke with your budget. it is a good open boat with quite hide sides for it's size that will get you a km or so outside in swells 1m or less. Whilst it might be ideal to get a large boat for heading outside, The investment gets a lot larger and generally you end up with an old boat that needs a bomb sunk into to keep it going, trailer falling apart, old motor having issues etc. Also with the smaller boat it's easier enough launch the boat your self, easier to tow and store and on the whole you are more likely to use it. This is what i have found in my experience.If you have not done so yet get out to a few dealers and take a look at what you get for your money with your own eyes. You will be surprised at how expensive boats are.