At 225 you are looking at 1.5hrs-2hrs/pound. If you want to get it to about the 9hr mark you will need to bump temps up to about 275-300ish.
*Weber Mini WSM x2 *
*Weber 22.5in OTG x2 *
*Weber Touch and Go Performer *
*Sublime Smoke UDS*
*Maverick ET-732 * World's Fastest Blue Thermapen *