Well, if the ones you've ordered don't work out, you can't find anything else that does, and you can work up a plan, CopperGifts.com can certainly custom-make them for you. Their work is not cheap (especially custom jobs), but they're so well made, you're unlikely to ever have to buy the same cutter again, unless you need more than one. And no, I don't work for them.
Why not take apart a freshly cut fondant or gumpaste daisy................petal by petal. That should do it.
I think you will be okay with the 1". Take a look at the smallest one on the top tier. It looks to me like it takes up about 1/3 of the height of the cake, so figure the cake is only 3" tall if you use your 1" cutter. You may even want it bigger? I think it's just an issue of perspective that it looks so tiny.