Yes, DD2 is a tummy sleeper too, so I would first put on the over night diaper, and then put on an extra regular diaper on backwards, so that it would cover when the diaper would leak from the top in the front - not sure if I am explaining well.
we never did the dream feed so I'm not sure to be honest but I think I've seen an FAQ on this.
I was lucky to have a long maternity leave, she is my 3rd and last baby so I took an extra summer off, so by the time she started, she was STTN and on one nap so it went really well. I wake her as late as I can, and then give her a quick breakfast and sometimes milk but not always (she's 20 months old now), and then she gets a snack at 9AM at daycare.