What you have there is a very nice bicycle that will someday be considered classic... folks will ooh and ahh over the fact it is an early GT road bike with early brifters.
Wait... some folks are already doing that.
The pre Pacific GT's are really nice bikes... Gt really really overbuilt everything and their triple triangle, although not unique, does set them apart.
If you go back in time you will see that many builders used a triple triangle and the builder I work with was using this 25 years ago and had never seen a GT but drew from a time much farther back.