i might be able to answer this a bit better for you.
it really depends on alot of thing, the age of your domain, and how many backlinks your doing.
my domain is around 7 months old and im doing 400 links a day with it now.
sometimes i go a little overboard but w/e. anyway
you don't want to build them too fast, so if you stick within the 500 range per week when you first start off, then do that, it will work
so, for new domains, do them slowly and do it small.
the older the domain the higher you can do your backlinks