I'm glad to hear that i may be helping you to sort out your issues, i probably don't have to be as stealth as i am being, but in my opinion you can never be to safe when it comes to issues that involve so much time in prison... I only recently started growing but i have been reading for years so if you have any problems or concerns feel free to voice them and i will address them as best as i can, i may not have as much real world experience as i would like but i have very large amounts of theoretical knowledge stored inside my brain... As far as seed selection goes if those are serious seeds white Russian i would definitely recommend them, the white russian i grew on my first run was a stout mother fucker it didn't flinch under any amount of pressure put on them by my noobness, it managed to to yield 3.5 oz with the light 15 inches away and having half of its light foot print taken away by my crappy blue cheese pheno...
I am not sure why you are limiting your self to 250 but I'm sure you could get away with a 400 on your light bill with out anyone noticing, I'm guessing though that the issue is ventilation if it is ventilation and you have any options just let me know I'm pretty good at working things out and i would be more than happy to help you figure things out... Cutting holes in your walls is not nearly as daunting as you think it might be, i had reservations about doing it in my grow room for weeks if not months and once i did it i realized i was no where near as complicated as i thought it would be, i can also rest at ease now that I've done it because i don't have to worry about my neighbors smelling my plants before i do...
Anyways man good luck with your grow...