Unless you are in true need to have a small firing pin hole, I wouldn't mess with it. You have to remember that if you go the LRI route, you will be forever stuck with how LRI does it. It's not going to be compatible with how any of the other smith does their small firing pin setup. To me, the squeeze is not worth the juice.
Yep, that's why once you have it bushed somewhere you are locked into that smith for your future bolts. I had LRI bush the .300WM bolt my AXMC came with along with a spare firing pin, and about a year ago I got really lucky and snagged a .308 bolt body that had already been bushed by LRI from the px for only $250... score! LRI does very consistent work and the already bushed 308 bolt I bought from the px works perfectly with the firing pin assembly they did for my 300wm bolt several years ago.
If you want to spend stupid dollars, AI offers all 3 AXMC bolts in small firing pin now, but that's $750 per bolt body. You can buy a spare firing pin from mile high and have LRI bush all 3 of your current large firing pin bolt bodies for less than a single small firing pin bolt body from AI.