I'd suggest saying to your W that your S12 is running out of minutes and you want to give him her old cell phone. Don't just cancel, that may come across wrong but if you say its for the kids benefit, she may soften.
I'd not ask for where she lives, if you have her number, you know how to contact her for an emergency. Over time you'll know.
I dunno what advice to offer for dates other than do what works best for YOU.
And lastly, IMO do not say anything on the last q. Wait, over time you will know, I was in the same situation. I am still not completely sure and I'm 5 months into it this week. I believe its considered pursuing the R. No R talk. Its not easy but if you want this to work, follow that rule.
Good luck.
H:41 W:44 D1:19 D2:17 S:13 D3:7 T:20 M:18 Bomb:1/5/11 Sep:2/18/11 No D filed yet; just threats