heh, that brings back memories. my first A500, i had an ICD ad-ide under an Mtec020 board to lift it over a 2meg minimegachip agnus upgrade. i didn't care about the keyboard as the lid was never on my machine :lol: but it did work with an A570... even with the 3.1 upgrade... good times...
ok, so as you want to keep your amiga with its lid on, :-D your options are pretty much as follows:-
A570,supraturbo28,external rambox,68kIDE hard disk board..
A570,internal accelerator, no hard disk.
A570, rambox with pass-through, 68kIDE controller, no accelerator.
A570,find a hard disk with a pass-through,internal accelerator.
external scsi DVD/CD, scsi hard disk contoller+ram, internal accelerator or supraturbo28.
extrenal scsi DVD/CD, A530.
really you gotta ask, what are you going to use it for? if it is primerily playing CDTV titles then get the A570.
if it is just accessing CD stuff, then go for the external CD drive. you can kinda play most CDTV stuff on a CD drive anyway. iirc the IDEfix97 CDrom driver software off aminet comes with a CDTV/CD32 emulator for stuff thats hard coded to look for cd.device
i hope this is of some help in getting you to where you want to be :-)