Thanks - and yes, you'd need to provide custom chips.
Kickstarter ROM
I use 1.3 but you could do whatever you wanted.
Agnus
The 1MB is the most common and cheapest. If you are able to score the rare A3K Agnus, you'd also need to investigate the little RAM adapters you'd need for the RAM. Site member Christian created them for me, and he could explain in detail how it needs to be done.
And the a couple of your chips migrate from the mb up to the new Rejuvenator daughterboard.
That's it for chips!