Sounds like you need lots more light in the flower room....
The general rule of thumb is:
1000w per Bedroom is not going to raise any eyebrows.....
It has alot to do with whether or not you are in line with usage in your area.....
If you live in a 2 BR Apt...and the neighbors all have $60 light bills and yours is $300....someone is going to take notice.
Hopefully you own your home and you are in an area with a wide range of sizes.....maybe 2500 sq. ft.-5000+sq.ft.....this is the case with my neighborhood and because of this...$300-$800 light bills are the norm.....depends on pools, hot-tubs, gas heat v. elec heat, etc.....2 kids v. 5 kids, etc.
Keep usage in line with the high-average in your area maybe a little more and all you are is a good customer to the electric company.....
Check out the threads in my sig, a journal and my 4000w grow in design/set-up.....my light bill is pretty chunky but no probs thanks to the hyper-consumption of my yuppy neighbors.
-OitW