A lot of people including myself have done what you are doing at the advice of a LFS
. I bought 3 damsels and 2 of them died right away. I still have one of them now and its over a year later.
And hes the friendliest damsel I have seen!!
I would do water changes every other day if you can for sure.
Also consider this. Why not get a small peice of LR
and then add base rock to the tank later. Base rock is nothing more than LR
that once was Live...Plus if you get a peice of LR
it will help cycle the tank and then get base rock and let it seed. Takes about 6 months for this to happen but its a cheaper way of doing this. You dont need a skimmer immeditaley. I waited 4 months to get one and it was all ok. I buy peices of LR
from the LFS
every now and then. Over the past year I have accumulated over 95 LBS....doesnt take to long. Hang in there and read read read!!