Sounds ok to me. You could turn down the lights if that's possible.
I was fortunate to have a roommate when I was in ATL that dumped in my EI premixes for each day I was out of town. But, then again I wasn't gone for more than a week.
If your buddy is coming every day to feed the fish, you could make up a batch of mini bottles like I did premixed in water and labeled...then he/she can just dump it in. I just used the "travel" bottles you can find at walmart or target and labeled them mon, tue, etc.