Edit: Eep, I wasn't clarifying enough. I would like to specialize in mining and making crafts from that rock (smelting, crafting, masonry, etc). Just don't want to have to worry about all the different industries
With that specification, I can say have a few craftdwarf workshop and around 3 stonecrafter to 2 workshop ratio to keep them constantly working ( I think around 2 to 4 workshops should be able to keep up with half-dozen legendary miners and a lot of stone haulers ).
Doesn't really need many smelteries since you're likely to want to process ore over longer time with 4 metal bars to 1 ore. Though studding the craft would improve the value, and don't need fuel for it, so you could run as many forges as there craftdwarf workshop, or maybe more since experienced stonecrafters can crack out 3 crafts to 1 stone.
That'd cut down the variety that you'd have to deal with since it'll be fancy stonecraft in end! Might have to buy more anvils to keep up, though.
Workshop recommendation would be forges right next to the trade depot, with craftshops for stones further back, and no stockpile for anything other than metal bars and stones to keep them close to the workshops. That'll allow you to quickly grab up the studded stuffs if you organize your trading menu by distance!
Have a stockpile for everything else further off from those workshops, though, since studding will try to take nearest thing that can be fancied up ( which can be yet another thing within the shop, if you're rotating through different metals to stud with ). Linked stockpile could help here, but you'd need bins to store as much craft as you're churning out.