The facts that you have to consider are Division your are playing in,Fan survey,No. seats ,Opp team
From what i see in your arena you took a very good decision with the future prices.You could go a little higher in the Lower Tier to about 47 and maybe 700 on the Luxury Boxes.On the Bleachers you could try 14-15 but really dependents on your fan survey but i see you are going strong in 2nd so this could work.Also you can invest a little more in your arena.