I have a few bullet fed 650's using GSI bullet feeders and homemade collators that work fine with cast bullets. Another bonus of the Dillon/GSI set up is that it's the only combination of press/bulletfeeder where you can retain the powder check die and seat/crimp in two different stations. The 650's will load 100 rounds in 3 minutes, you can shave another 30 seconds off using a bullet fed 1050.
The Lee bullet feeder is junk. If that gave it away for free I would still have felt ripped off. Their progressive presses are better but not by a lot, IMO.