I'd go with the following...
Butterfly it out, stuff with crumbled Bury black pudding, chilli jam and Tallegio cheese (this is an absolute jawgasm combination

), then roll back up and wrap in a nice cured ham like serrano, proscuito etc.
No need to rub, just a little malden and cracked black pepper then throw her on the cooker. Low temperature is fine, but with the oin you might as well run a little hotter to get it cooked quicker, the end product will be pretty similar either way though.
Make sure it's not over cooked, I think minimum "safe" temperature for pork is considered 160F but I don't take mine to that, I usually take it off the smoker between 15oF and 155F. As always, resting is essential although it doesn't need to rest for hours like you would with a butt.