Dave,
The best advice l can give you is this, before you develope faults that are not always easy to loose.
Go find a good casting intructor.
So far as rod and line preferences, l have my own, and if it is a case of casting extream ranges 90 to 120 in 5 or 6 wt class it will be either a Ticrx or a Sage TCR.
Coupled with a SA/ED line.
The primary reasons why l choose those rods is that they will allow for me to hang a very long line out on the backcast, at least 80ft or more, which is needed to achieve max range with the right line.
But they are also good set ups for fishing, but not always.