Considering you have the great range of eyepieces you already have I would stick with those for a while and get a Cheshire eyepiece and laser collimator if you haven't already and a Telrad (or equivilent).
Collimate the scope really well and the views will be much improved and, of course, finding the objects is much easier with a 1x finder combinedc with the standard findeer scope and, as a bounus, there are plenty of finder charts for these finders on the net.
Take it a step at a time or as they say, act in haste and repent at leisure. Accessories are expensive things so choose slowly and wisely.
Keep looking up
