Firstly, expand your arena as much as you can. Its way too small for div 2.
That said, your team is older than the New York Knicks, those starters will have to go soon or sooner

You may be able to keep em for another season and get some wins, but skill drops are gonna happen.
For that small arena, and with the freshly promoted bonus, go:
14 bleachers
55 lower teir
180 Court side
1600 lux
Manager of the Bahamas National Team!