Nobody can answer you with regard to STN base. In general 100%ers do 600-800 hours per year, and I would imagine that a 70%er would fly the best part of 600 hours per year as the 70%ers fly full time in the summer (busy) season, and take their time off in the winter when 100%ers fly very little.
Last edited by Johnny F@rt Pants; 17th September 2016 at 20:00.