I do not know to much about fly fishing, I have only flyfished for about 30 years, half of that time in fresh water and flyfished in salt water before it became popular in saltwater. Fly fished around the country and Canada. I'm a beliver in one gun for hunting one flyrod for fishing, I do not belive in a half dozen rods from a 4wt. on up. You might say I believe in one universal rod. The 8wt. handled anything from a little brookie to a 40" atlantic salmon. Salt water is a different story, bought me a 10wt. and wasted my money on sink tips, intermediates and sinking lines. Everybody will have a different opinon and you will probably spend a lot of money starting out.
In salt water today I use only a 10wt. with an Orvis depth charge line with a 40 pound tippet. Even fishing from shore I use the depth charge in a foot of water,have to pull the line faster in shallow water. My biggest striper from shore is 43 inches twenty seven pounds. On this perticular day I even out fished the guys using plugs.
Yup you can laugh about what I use but it works.
Be carefull, you can go broke buying saltwater flies that do not work, they are not cheap.