The problem with dichro to dichro is that you are metal to metal, and there’s nothing to “stick” to. If you are using dichro frit, there should be enough base glass, and it’s all tumbled together, so that you are fusing dichro to glass.
That being said, I would probably use just a little dichro and fill mostly with transparent glass (or clear), and I would start with just a piece or two of jewelry as a test. I think you may get results you are not necessarily expecting. With what little I have done, I haven’t been happy with the result.
Jester’s Baubles Fused Glass Designs