Your timetable is fine, although I reckon the flying bit may be tougher to schedule in than you think. I did start doing some flying to break up the groundschool, but stopped in favour of using the Saturday to study. I had a full time job, but studied each evening (not Friday though) and 4-5hrs each weekend day. I guess I did around 20-25 hrs per week.
Focus and dedication are required in quite large doses...