I just clicked "buy" on eBay for a used A1200 from the EU (I"m in Los Angles). Here's its specs:

• Commodore Amiga A1200 (rev. 2B motherboard).
• 3.0/3.1 ROMs included (3.1 currently installed).
• 8MB FastRAM expansion for A1200.
• Gotek floppy-adapter + 2GB USB-drive/selector.adf."
• ScanJuggler XAGA Lite scan-doubler.

I've also pre-ordered the following from amigaonthelake:

• Apollo A1200 case, black.
• Kipper2K A1200, black keycaps.

Looking to buy:

• PS/2 adapter + PS/2 three-button mouse.
• Accelerator with selectable soft boot to 3.0/3.1.

I sold my Amiga A2000HD in 1995 so my recollection of Amigas is a bit sketchy. I bought this to run Magellan 1.1 from Emerald Software (not Opus Magellan). It's an expert systems app which only ran on Kickstart 3.0 ROMs and wouldn't run at all on 3.1 ROMs on my old A2000.

So . . . the prior owner has the 3.1 ROMs installed, but I plan to re-insert the 3.0 ROMs to run Magellan *unless I can soft-boot via an accelerate or something). The equations is, which Workbench do I need to run the 3.0 ROMs?