You are going the sandwich route...I see! Now I really look forward to the finish! Mine just hit 115°, took almost 2 hours exactly at 180° controller setting. Pro has been turned to 600°, have no idea how much meat temp will drop in the next 10-15 minutes, nor how long searing it will take to reach 135°.
I will say, I do see why people wanted temperature gauges that you can read from your phone, that was just to easy!