Thanks for the Replies,
Will try the ACA1231 in the C= A1200 and see how it goes (it does get very warm even with the heatsink).
Zetr0 - The 4GB CF card is in my AT machine and I haven't had time to switch it over, I only picked the other machine up yesterday (needs de-yellowing) so I've only plugged the Overdrive in to have a little play
I think I may get KS3.1 from Amigakit just for the sake of it, if I decide to keep 3.0 atleast I've got 3.1 as a backup.
Also have 4 PSU's to choose from 1 x A600, 2 x A1200 (probably the same as the A600 one) & 1 x A500.
Will look at the guides for extracting the KS3.1 from the AT machine (not physically removing) for use with the ACA1231.