I'd shoot for 225°-250°. If you are doing Baby backs, Approximately 4-4 1/2 hours. Spareribs, approximately 5-5 1/2hours. Some foil, some don't, so you will have to decide. Make sure you remove the membrane from the back of the ribs, and keep the smoke thin and blue. One of the biggest mistakes is to over smoke. I like to spritz my ribs with apple juice or a mixture of apple juice and Cap't Morgan (trouble with this is I usually get more of the cap't Morgan and apple juice in my mouth than on the ribs!
). I have even used cherry juice and it was awesome too.
Good luck, and be sure to post some pics!