are u planning to have Live Rock...??? if so, its better for u to add it while cycling process....but if u can get its cured from your LFS
to your house, then its fine until before u want to add fish...
its nice to have fake thing in tank, but i would remove it..JMO
owh...i notice u used air pump in your tank..??is that true..??i would also remove it...JMO