With advice from an SFer who showed me a few trusted ebay sellers, I picked up a bespoke double-breasted (made for someone else) that looks to be a close fit. Got it in the mail yesterday and went straight to the alterations tailor (also vouched for by SFers and Will from ASW).
I expected to move the sleeves up from the shoulder and hem the pants, but decided on doing more after looking at it in the mirror with the tailor. Taking approximately an inch off the bottom of the jacket (I know, I know, I'm a little scared, I can't lie!), bringing in the waist, and moving the button stance slightly to have the outer lapel lay more flat against chest.
I know this might sound like a huge overhaul, but I'm thinking (and hoping) it's going to be worth it. Here's a shot of the suit from the ebay pic. I didn't take any pics of the suit in person, but can't wait to update with a few pics of the end result. Thanks SF....