Need help with finding long term suppliers

anyhow my best advice is, friends and family, auctions, junk yards, and also get business cards and start talking to librarys and other offices and places that use a lot of computers

Yep, networking with anyone and everyone you know or meet, handing out cards, never know who's sitting on the next big batch of electronics.
If you know someone going to college then have them network for you as every "kid" has multiple electronic devices. Some of the geeks are always rebuilding their computers.