Found a alternative to wax seals at home depot that seems to be designed
to meet my needs -- looking to see if anyone has had good/bad
experiences with this.

From the manufacturers web site:
http://www.fernco.com/fts.html

This appears to meet my needs because I am raising the floor 5/8" and
this states "seals on raised floors, wood, tile, linoleum, and carpet"
and "no need for flange risers or stacked wax rings".

Thanks in advance!
Alan