Gold rush & rainbow Monti placement/care

[Aquariumaddictuk]

Evening all.
I have a goldrush Monti frag arriving tomorrow along with a rainbow Monti.
What's the general light level these guys show their colours best for you?
Also-ive read before that rainbow can be an invasive devil.
Is it Best placed on its own island?

 

[Propane]

They can handle a lot of light. As far invasive I’ve never heard that but some do grow fast and abuse other sps.