100-200k is probably not enough but I'd certainly investigate the possibility of producing cheap complete Minimig systems. I think if it came with around 10 games and cost £30 it would sell pretty well. Additional games packs could be sold on SD cards to bring in some more revenue.
It would raise the profile of the Amiga brand and hopefully generate the kind of cash flow needed to develop Amiga OS4 to a state where it is worth considering to the average Joe.