I pull the pork at 140 then FTC.
FTC =
Foil (I double or triple wrap mine in foil with the shiny side towards the meat.
Towel (Wrap in towel; I use a large bath towel)
Cooler (I place mine in a cooler; I will fill cooler up prior to placing meat in with very HOT water then dump the water prior to putting meat in) You can also place in a microwave or an oven. If I place in oven, I preheat the oven at the lowest setting and then make sure the oven is off prior to putting meat in oven.
Utilizing this method, you can keep the meat for up to 6 hours to time dinner better. During this time, the IT of the meat will usually rise ~ 4-5 degrees.
It will still have a little pink but will be safe for consumption at that point. I would do about 40-60 minutes of smoke with a light wood (apple, cherry, pecan, alder; no mesquite

) and probably plan on at least 2:30 or more depending on ambient conditions. A small pork loin will not take very long. I'd place bacon on a rack above the loin as a loin can dry out with very little fat content. The bacon will drip on the loin and help keep it moist.
SD