I haven't done TRL but I've done LC and Barberpole, so I feel qualified in saying how long Barberpole should take and how "easy" the aid on LC is comparatively.
I can't remember exactly how long it took us to climb Barberpole several years ago, but I have in my notes that we summited before 11 AM. Probably started at 6:30 AM, hour and a half to approach, scramble The Bong, and rack up. Started climbing at 8 AM. Three hours.
Granted it would be faster to just climb from M&M Ledge rather than the approach ramp of Barberpole too, but you'll be carrying more stuff and will have already been moving for a while.