Before anyone can help you design a room, you need to make some decisions and give more info. Photos will help, but include a sketch giving the layout & measurements.
What is your goal? Personal consumption? Do you plan to sell? How much yield do you need?
Will you be keeping mothers? Will you run from seed or clones? Do you need space for these in the room or do you have a separate space for them?
Do you want the room one big grow or do you want to divide it with framing/drywall/insulation? You could run 3 areas - one for mothers/veg/clones and two for flowering where you can stagger harvests. Or you can do grow tents/huts for the same purposes.
Soil, coco, hydroponic? If Hydro, what type?
Where is the storage room located? Basement? Shed? In the house?
What kind of climate control is in place, if any? Heating, cooling, ventilation...
That should give you a few things to think about as a start... good luck!