I cross wire all my deep brood frames, and also use the pre-wired foundaton. I use the electric embedder, but added additional metal strips to push the wire against the wax. It makes for a much more solid sheet of foundation, and gives better brood comb.
However, the little darlings will also turn some beautiful foundation into drone comb... I'm going foundationless now, which is a whole other topic!
Regards,
Steven