Large Plants in Hydro to Soil?

I have 2 plants in 6" rockwool that are about 2' tall, I had them left over from a grow and used them as mom plants. I keep them in a small closet with a ebb n flow, they are rootbound and my lil hydro system doesnt have room for anything bigger.

I had three, I put one in a 5 gallon bucket of soil and its still alive after week n 1/2 . I want to put the others in soil and flower them along with the rest of the plants in the other room, I switched from hydro to soil to change things up.

Any problems doing this with such a big rockwool block?

Sooo noone even has an opinion?

I don't think you will have a problem at all. The only thing I can think of happening would be the plants growth stunting or slowing. I highly doubt this tho.

From hydro to soil is allright,when you go from soil to hydro it stunts the fuck out of plants
If your cube is that big you could probably trim it some