Your plan will work, except, you will probably need to add a little at the end, if you run exactly at 225°F. Still, better to come out of foil a little under-cooked. I might even go 1.5-1-until done
I'm feeling bearish, and I'm packing a Wusthof Grand Brisket slicer from MABA
"I'm Armenian...perhaps...but then again...maybe not..."