Hi Marco, I have had six Boatersworld Outerbanks rods in the 50-130lb model range for the past seven years and they've served me very well. We fish the same waters as you and I don't think anything more is required. Having said that (if money is no object) there are better rods out there, but some prices are outrageous. The Outerbanks rods are an excellent value.
I also have a couple of huge Marlin rods that I never use any more because they're not necessary for the type of fish we get. The only firm reccommendation I would make is to spool your 50's with as much 80lb Spectra as you can get and add a 100yd topshot of 80 lb mono. It should take 800-1000 yds of line in total. When you do get a huge fish you'll be grateful for that extra line.
Email me if you need more info.