Add another flourescent fixture to bring light levels up. Cost effective and does not add any additional heat.
My umbrella plant responded very well after the addition.
Try lllreptile (also a sponsor).
http://lllreptile.com/store/catalog/feeder-crickets-worms-rodents-roaches-and-more/crickets/
1000 for $20 and on the west coast
He is pretty mellow. We picked him out because of that quality because we have a two year old (think loud).
In fact, I think Darwin has more patience than I do.
Cheap and fits your description.
http://www.lowes.com/pd_155671-95363-TE06WHBL_0_?productId=3125319&Ntt=timer&Ntk=i_products&pl=1¤tURL=/pl__0__s?newSearch=true$Ntt=timer
To OP, We just got a brother of his from Cham. NW and have been very pleased with his coloration. Ours has a bit more sky blue on his bars, otherwise very similar.
It will be nice to track their changes as they grow up.
Cheers,
Jason