Hey Benjamin Yaw,
Bait tackle store in Underwood, Brisbane stocks them so I have handled one. I own its little brother the 75H which is a lovely PE3 stick.
Anyway, In my view the GTH wouldn't balance as well with an 18k. It would feel perfect with a 600-700 gram reel like the 14k.
Its hard to find specs on the rod, if you emailed Ivan at Bait he would weigh one for you. I suspect it would be mid 300g range for rod mass. The Major Craft Giant Killing GKC-86 Tuna is a similar rod, and that weighs 329 grams.
My understanding is that FEED are manufactured by Major Craft, and having loaded the GT83H and GKC86 Tuna and also the Crostage rods side by side, they are pretty similar in many respects, perhaps that helps.
cheers