First we need to know what style grow you want to do.
A SoG, perpetual harvest: a la Al B Fuct is definately the most productive use of space. Ideally you would do this in hydro but it can be done with more lifting and effort in soil.
You could maintain you mums and clones in the main area of the room, use the 2x5 closet for keeping tools and supplies neat and organized and then partitian off the whole end to have a 6x9 flowering area.
Total Space for Veg15-18 sq.ft.
Use either 600 or 1000 as mentioned for lighting.
A small shelf off to the side of the room with a heat mat, trays and humidomes with a small floro for clones.
This veg and clone space should be climate controlled with the household system. Air cool the light on a closed loop and put a carbon filter on the veg area exhaust.
Flower Area: 54 sq.ft.
Several Options
Hydro:
4-3x3 Flood Drain Trays with (2 on each wall with corridor between)
Each pair of 3x3 trays should be serviced with 1kw HPS as mentioned earlier.
Feed 30-36 clones directly to flower every 15 days-Then after 60 days you can pull 1-2lbs every two weeks depending on temps, humidity and your skills.
This is a replica of the Al B Fuct system and i run a set-up just like this except twice the size. Very productive i assure you.
You will only need 6-8 healthy mums and really won't need a 1kw for them. With all the space and extra wattage I would maintain 6-8 mums of 3 strains you find to be to your liking (to grow and to smoke). Rotate through the strains and you will have nugs coming out your ears 24/7/365.
Dirt....ugghhh
Lug in a couple cubic meters of soil at incredible expense, effort and security risk.
Then do the same thing in pots of dirt. Have 4 defined areas and fill each area every 15 days with an appropriate number of plants to flower
Couple things:
You will probably need a room unit a/c in conjunction with venting your lamps on a closed loop. You will definately need a dehumidifier and possibly a sulfur burner if you are wanting to grow christmas trees (which I don't recommend) Exhaust with ability to exchange all room air every 3-4minutes. Passive intake should be fine.
Lots of other shit too. Hope you have done your research. I thought I was prepared when I built out two 13x13 rooms and ended up almost 2x my original budget. For instance you should plan to spend a grand on odor control alone for a full sized growroom-well maybe 600 or so. It just adds up quick is all I am saying.
Hope that gives you something to think about.
-OitW