Dylan,
I totally agree with Brandon on this, as i most often do.
I too once wanted a rod that will do it all but this is a very tall if not virtually impossible order.
I would ask myself the question 'what will i be fishing for first'? If GT's, get a general purpose GT rod and if Tuna, get the tuna rod and save up for the other one.
Ultimately, if you are not using the rod for the purpose it was built you may lessen the experience as well as damage gear so get the right one.
While i am by no means an expert in this style of fishing, if i was looking for a rod within the budget you have specified, i would lean towards the Hot's Gipang mentioned earlier in the thread.......... you may just need to bargain a little.
Happy fishing, good luck and let us know what you decide.
Cheers,
Chris