I use an A570 with SCSI-TV and HD, Supra 500RX with 4 Megs of fast ram. It works with 1 or 2 Megs of chip ram. The A570's internal CD drive is not in the SCSI chain.
A570 doesn't like acceleration other than 7 Mhz 68010 (hard to measure benefit).
A570 will boot from a CD with the OS on it, if you can write your own (less need for a HD).
