Phil, Louis and others that know the insides of the 5hp24 tranny I need an advice.

I am at the point where I need to take the tranny down and fix it. Not sure if it's better to buy the transmission kit before I open it up or open it up and then buy what it's needed. Since I don't want to have the car unusable for too long I would prefer to have all the parts before I take it down.

Recently I get the vibration once in a while as well beside a hard upshift o slipage from 3-4 sometimes before warms up.
I already bought the VB kit and I can start with that but this is not going to fix the vibration which is caused by the TC based on what I have been reading so far.
Since I will have the transmission out I would like to rebuild it but what is the package I need for this job? Please see the link below:

Transmission Kit : Automatic, Standard Transmission and Transfer Case Rebuild Kits, Cobra Transmission Parts 1-800-293-1848

Master or Banner kit or what else?

Thanks