What's the difference in weight between AGM batteries and regular batteries? My Nitro came with a Interstate 24 battery which the original owner said came from the factory. Of course it died during a tournament so my son met me at the lake with a new Advance Auto marine battery to get me through the day. From what I'm seeing this is too small? I've got two 5's and 7 inch that are usually all on. It's got a 200 optimax so I'm sure I need the cca to turn it over.