Cranking amps and deep cycle amps are different, so I dont know how big your batteries are. But they don't sound too big.
One of the wonderful things about solar is you never need to hook up to power in a marina again!
I have 2 x 120 watt pannels and a 2000e Solar Boost regulator that stops the batteries being charged when they are full. (the 2000E is about $250)
But I have a far bigger battery bank than you: 330 amp hours of deep cycle.
I would suppose you can do with one 80 amp hour panel and thats going to give you all you'll need. The price of them has dropped a lot over the last few years.
If you have a bit more panel than you need your weekends away etc will be more fun