I think for Arena pricing, again have a look at the guys in your Div and see what is being achieved.
Blore Dragons 11920 capacity (he is top of the table and winning everything)
Rocker Boys 32855 capacity WHAT! (he is also top of the table and winning everything - bad example as this guy amazingly has no idea)
Rescue Ink 8620 capacity (pretty good example for you if you can mimic his win/loss model)
Looking at these guys as examples. I think you are alright except for your Lux Boxes, which I would think $1000 would be your max (I think a little below that might be more like it though $8-900 ish)
Make sure you take into account how you think you are going to perform during the pricing season, if you think tou are going to take a few hit go lower, if you think you can be a consistent winner (away, TV and rival matches most important) err on the higher side.