Sorry, I must have overlooked the mention about the existing BP station being too small.
Roughly how big are you thinking in surface area?
Spawn area seems okay. Whereabouts the spawn are you thinking? It can't cover spawn directly because you can't build in the spawn protection area (around where the welcoming platform is) and because you don't want people spawning in or on top of the station itself. Maybe immediately east of spawn, between the skyway entry tower and the water dong? Or on the beach north of the tower (where the cake portal is currently located)?