3 hours in heat then wrapped for 2 hours and you'll have pork soup. They will be overcooked. If you insist on wrapping in foil, I'd do 2-1-30 minutes and check 'em with the bend, poke or bone tug test for "done". The 3-2-1 method is designed for whole racks of spare ribs cooked at ridiculously low temps.
To prevent them from overcooking during the rest, lest them sit unwrapped on the counter for 15-20 minutes before wrapping up in foil or plastic, or whatever.
Rescued 22.5" OTS. SJS Mini-WSM. HEB briqs (rebranded Royal Oak). Pecan/Hickory/Cherry/Apple/Peach woods.
2016 Fuji Absolute 2.0 LE (for burning off all the great BBQ)