that sounds like the same issue i was having when i did my clutchy. mine was on the 2-3 shift too gettin on the freeway i would quickshift, let the clutch out and immediately back on the gas hard the revs would go up and down if i pressedthe pedal in and out then after a second or two i would match revs and take off, but the clutch was out the whole time.
if you replace the clutch i would recommend doing a lightweight flywheel. i felt the biggest increase in acceleration from this mod. if you have any questions about the install let me know cause i've done it before. pelican parts has a very good write up on it too.
what upgrades are you considering doing, you might look into doing a stage 1 or 2 upgrade on the clutch if its going to be a whole lot of change. i have the stage 3 spec clutch in and it is great