I couldn't leave my wife with the project... it's not her thing, and the whole concept doesn't interest her in the least. But hey, she looks better than I do, and she makes more money...

Your internal temp is fine, as you aren't up to the plateau temps yet. Are you monitoring the bigger or the smaller butt? They will probably be done at different times... not far apart, but the smaller one should finish (an hour or so) ahead of the larger one. 195° to 200° internal would be my choice.

If they are done early, no problem. Wrap in foil (I use a cake pan and foil it) Prewarm a cooler with hot water, dump the water and pack the foiled butts in towels in the warm cooler. Lots of towels. The butts will easily hold their temp for 2 to 4 hours. I prefer pulling the pork while it's still hot, but it will pull fine if it cools down.

Good luck.