Michael, I think a few of things you wrote have scared any of the guys off making a recommendation. Stating that you saw a few 60kgs fish and then making the statement that if you hook a GT, you want to be able to land it probably has a few guys thinking that you are asking the impossible.
if you want to have a chance on big GTs, you can't really buy tackle that you can use for all kinds of fishing. You need very specific tackle for this.