Howzit Stuart,
For the shoreline GT fishing you intend to do, and with the lure ratings that you are interested in, there are a couple good options. I suppose the best place to start would be to ask how aggressively do you like to fight your fish from the rocks?
If you're the kind of guy who wants to hook up to 20kilo GTs and crank em in with no drag taken out, then i would suggest the PD Rockfist or the United Composites 100XXH. Both of these sticks have an ideal lure range of 150g-180g and an awesome amount of power down low for vertical lift in deep water. The UC has a bit slower tip section, but more power in the tail than the PD Rockfist XTX115. These are more popper rods than stickbait rods. I like them with 180-230g stickbaits like Ulua 200's and Bigfoot 230's. They can do a 150g stickbait, but you gotta go easier on them.
If you're looking to throw smaller lures, and fish a little less aggressively, then that opens up your options a bit more. The MC Works 106XX is nice with lures 100-140g, the Ripple Fisher Runner Exceed is pretty similar, and the Zenaq 100HHH is nice too. Each of these rods is a little less powerful than i care to fish where i live, but really light and sweet. These are all great for both lighter poppers and medium stickbaits.
I respectfully disagree with Gerhard about the Black Hole 106N Heavy. I built a couple and found them entirely too soft for GT fishing. 60g-90g is nice casting on this rod, but the backbone just isn't there to get dirty with big fish.
As Clem mentioned above; I have worked with CTS to develop a line of Hawaiian Shoreline Specific GT rods, that have been designed for hardcore fishing on nasty lava rock terrain. We have three models available ranging from an "All Around" rod to an "Absolutely Ridiculous" rod. We have had awesome results with them so far.
Hope this helps you out in your pursuit for a good land based rig. My group of fishing buddies over here has just about every shoreline GT rod ever made, and we have put everything to the test side by side. Shoreline GT's are a niche fishery within a niche fishery, so its nice to have some input with the complete range of whats available out there before making a big purchase.
Aloha