Like mrX said sunrise and sunset isn't necessary. I would recommend led
lighting though and it doesn't have to cost a fortune. There are plenty of cheap LED
fixtures on the market that work great. Taotronics is one brand that lots use with great results. If you want more features there is pharos LEDs also. They have everythig short of lightning storms and cost me less than my 48" t5ho fixture. Led
provides ample light, actually can be to much so being dimmable is a must. They provide the shimmer effect like metal halides without the added heat plus they are much more energy efficient which helps on the power bill.