looking good buddy.
just keep in mind that simple is better. the exaust should on top oppisite your intake and blow out. you will have to get creative in lite proofing it but got the idea with the intake and might want to go from there. 40-50 watts per square foot. remember simple. your light might creat a problem and might want to check your temps before throwing plants in there. two plants will be fine. scrog looks to be the best option. keep your pots small like 2 or 2 1/2 gallons dont know how many dim dar liters would be. 7-10 liters maybe. anyway off two plants you will prolly get 1-2 oz's if heat isnt an issue. otherwise you will have whispy buds. also, DIY carbon filters is a good idea.