if you do not want to be temporarily blocked on facebook about sending request to your friends, you should to send request to your family and friends and you will not be blocked, because it is spam.
get an iphone or android phone (here is a hint you can get an emulator for the android) and use the facebook mobile app and add upto 250 per day
Anyway to do this on a mass scale.. like 1-3k accounts?
not with that many as far as I know, however have you read Indianbills journey in the Journey section??? he gives a huge insight into working with accounts.
Remember 30 accounts with 5000 friends is alot of clicks!
20 new friend requests times 3 sessions a day gets you 60 new friends a day.