A new Amiga portable console with new custom chipset.

[ElPolloDiabl]

What you really want to do is put UAE emulator on some real hardware. Most of that would be programming.
Instead of booting into the OS, you boot into UAE and configure the speed and chips first. Then boot into Workbench (or game).
You could pick an ARM chip to run the emulator side, and not worry about a non-existent 233mhz 68k core.

Approx what size will it be?

[ElPolloDiabl]

btw. Why don't you install Oracle Virtual Box. You can fiddle with an OS all you want without breaking anything.
I'm setting myself to make an extra lean XP install. I've read more bad things about Windows 8 and want to stay well clear of it.
We do have powerful hardware nowadays that you are fully locked away from by horrible operating systems.

[ElPolloDiabl]

There is also the MCC 216. Multi Classic computer. Check out some of the reviews on that.
I'd like one. Perfect if you mostly play games.

[ElPolloDiabl]

No Amiga effort would make a lot of money. AROS is the best effort because you will get a lot more people.