Baggy pants: Ghastley has some "plus fours" for the P4 Male at his website. I don't know if they're baggy enough for your purposes.

Pouches: Try GreyLight. You'll find a great medieval-style belt pouch in the Poser Archives, under Personal Items.

Vest: Haven't seen any freebies for Michael, but ronmolina has Western and biker vests in the Marketplace. Or you could take an existing shirt/jacket, and transmap the sleeves.