Here's the info on all of the individual pieces.

Also, big shout-out to Bronson BB on the RPF for putting together an awesome thread that was my go-by:

https://www.therpf.com/showthread.php?t=56865&highlight=Malcolm+Reynolds

Thanks to Eloise Hands for a great Kaylee jumpsuit for my wife to wear alongside: https://www.etsy.com/shop/AuthenticityCosplay

Shirt: eBay find.  Pronto Uomo Dress Shirt in Cordovan from Men's Wearhouse

Pants: Scully Rangewear By Men's... https://www.amazon.com/dp/B005DIN2QS?ref=yo_pop_ma_swf

Pants stripe: this ribbon in brown, died 40 minutes with Rita chocolate for nylon: https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F282994081782

Browncoat: Firefly Malcolm Reynolds Suede Leather Trench Coat Costume (L) https://www.amazon.com/dp/B01DROCVXO/ref=cm_sw_r_cp_apa_i_6fW1BbMHY8A08

Boots: Telacos Firefly Serenity Captain... https://www.amazon.com/dp/B07FTG5ZJC?ref=yo_pop_ma_swf

Suspenders: the officially licensed ones.  Got them at ThinkGeek, but they're out of stock now.

Holster: https://www.etsy.com/listing/251929920/malcolm-reynolds-holster-and-gunbelt?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=malcolm%20reynolds%20gun&ref=sr_gallery-1-3&organic_search_click=1&sca=1

Gun: Note that this one is full sized, which as a result means it's too big for the holster.  https://www.etsy.com/listing/590554689/firefly-serenity-captain-malcolm-reynold?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=malcolm%20reynolds%20gun&ref=sr_gallery-1-2&organic_search_click=1&cas=1