Hi Peter,
Upgrading the finderscope will probably not be a priority right now as Patrick as mentioned . You can use the finderscope that comes with the scope.
I do find the red dot finder/telrad easier to align things with for me. I generally use both to find something quickly. Globular clusters I find easier in the finder scope to find. Alignment stars easier with the rdf.
I guess its more to priorities and what makes life easier for you.
