t-case help and opinion

[dhbiker456]

 
    Ok heres the deal.  I have a 91 mini with foward shifting t-case.  Im about to buy 4.7 t-case gears and was wondering if i should just put them into my t-case the way it is set up or should i get a top shift kit for it too.  This comeing winter im going to be going dual t-case so what is the best way to go about doing this?  Should i get a top t-case off anothere truck and use that and save my t-case till i do the dual t-case?  If you were in my shoes what would you do now if you had a stock t-case with money to get 4.7 gears and going to do the dual set-up in the winter. How would you set up your t-case till you do the dual set-up so you can just drop the secound t-case in winter.  The reason why i dont just go straight to dual is because in winter im doing the solid axle swap as well and i only want to buy drive shafts once.   Prob a dumb questions but some how i keep ocnfusing myself with getting the right set up and bout this foward t-case right   i cant remember if you wanted a foward tcase with a dual set up