So... Baseline recommendation of seat numbers for a DIV team? (Can't really judge off the teams in my division since they've been pulling for a while and have been in D2 / D3 at points in time)
Especially if just starting out, my viewpoint is to try to emphasize getting the more expensive seats built. I am pretty sure you won't be able to sell 50 luxury boxes, but build them incrementally and as long as you can sell them, keep adding a couple at a time with each expansion - you may be able to get as high as 40 sold, but probably mid 30s is my guess. Courtside is similar, but I think those may actually be able to sell all 500 even in IV, but I don't have my old arena information available at this point for historical sanity checks.
It looks like you're doing a wise thing already by not overbuilding bleachers early on, though. I think the best thing to do is just build incrementally like you are. I always tried to set prices to where I was pretty sure I'd sell out pretty comfortably when the prices changed, and then try to build in the seats to get dollars back on them immediately, and prioritize between lower tier/courtside/luxury depending on whether they were still selling out. Something like that where you go slow and steady would serve you well.
