how should i do my room?

[am3gross]

i have a 210 inwall. i am currently getting ready to redo my room and want to know how i should do it. currently i have a 210 inwall 100 gallon sump and a 90 gallon fuge. what i want to do is to continue with the 210 inwall. i want to change the 100 gallon sumo to a 180 gallon sump. i want a 75 gallon fuge. and i will also have either a 75 grow out or a dsb.... i will have all tanks "(sump fuge and whatever on one wall and the display will be on the other. i was thinking of haveing an island in the middle for a fragging station. i guess my question is

#1 how should i set the sump up? where and what should i put in there?

#2 what should i have in the last 75 gallon? dsb? growout? frag?

i should say that above the sump and the 2 75 gallons i will have 2 55 gallons. one for rodi and the other will be a saltwater mixing tank.

thanks for the advice in advance. mike