At least as I have experienced-- it is $1K in RL loads to the safe per day. I have not had any issue immediately transferring to one of my registered cards, e.g. T-Mobile, Netspend, AccountNow or Serve. I won't say there is no limit on the card loading, because I have not allowed my $1K safe loads to last more than 24 hours, but I have had no problem clearing $1K per day.
There should be no problem doing $30K a month provided you have a source for RLs.