i currently have a 1986 yamaha 30hp that runs great but always looking to get bigger and better things, i have a guy in a neighboring town that has a 1987 mercury 50hp with the older power trim and ss prop. he started it up for me and runs good for the little bit i saw it, and it appears to be very well kept. hes asking $400 for everything, would this be a good deal or should i just stick with what i have