4pLaY
Are you sure? I definatley used to use a higher version of WB than my roms. I remember, in the older amiga days OS 2.0 would NOT run on 1.3 roms, but i think after that to a certain extent they did. Anyway, to answer the original question - If its working... GREAT! You have answered your own question :-)
-edit
And, when i had my a500 with 2.04 roms, im 99.99% sure i used to boot os3.0 straight off the floppy.
Or maybe im wrong.. but it seems the question answered itself here.
Kevin