Looking really good

Iv a red sea 350 so just a baby compared to yours but they are great tanks so you made the right choice
Can't wait to see you fill it ...Are you going reef ?
Mines a year old this month and Iv just got to the point of be able to stop worrying about things and being able to sit back and enjoy it
You'll have alot of ups and downs but stick at it and you'll have a beautiful tank
And never hold back on asking questions no matter if you think you sound silly, loads and loads of helpful people on this site
Good luck with it all and enjoy
Here's a pic of mine a year in ;Greedy lol