I actually never bother with giving pawns lanterns, I'm sure the extra light can't hurt, but pawns' lanterns give off so little compared to yours, I doubt it makes that big a difference. I could be wrong, though. Give it a shot, let me know, I might give Shinon his back.
Start the process at sundown. Don't start early, because by the time you gather everyone, it could be dark. No, it WILL be dark out. It's the lugging bodies from the Venery that takes all the time. And you can't toss them to speed things up, you have to keep placing them down once they start kicking.
If you find one wandering pawn isn't cooperating when you want them to stand in a certain direction, they WILL NOT change their mind. Instead, make every OTHER pawn stand in that direction, which they won't mind doing.
I found certain places where wandering pawns stand were almost guaranteed to have Friend List pawns, although it could have just been a coincidence, one stands near the exit of the square towards the pawn guild section, another stands at the bottom of the steps beside one of the bridges near the slums. There are tons of pawns in the Venery, but sometimes the server takes a few seconds to load them, so walk a lil' slowly.
Hopefully you get a bunch of friend pawns in the Guild area, I usually get like seventeen Daeneryses and a Havel. All our boys tend to hang out with the prostitutes in the Venery.