What kind of "one to the side" safety are you looking for? Is it a safety that pivots from below the stock and rocks forward and back in a straight line? Are you looking for a Winchester type that pivots from the rear of the action and swings out and away then forward and back into the action?
Merely buying a trigger with a safety involved with it may not lock the bolt, so be particular in what you tell your smith when you order the set-up.
The bolt shroud is the easy part AFTER your safety style is selected. A trigger with safety attached which does NOT lock the bolt will be the cheapest way to go. Addid the bolt shroud is a liitle cheaper than the trigger and safety.
Here's afew example carried by Midway...
http://www.midwayusa.com/esearch.exe/search?search_keywords=mauser+bolt+shroud&cate gory_selector=all_products
and some trigger examples too...
http://www.midwayusa.com/esearch.exe/search?search_keywords=mauser+trigger+safety&c ategory_selector=all_products
Good luck on your sporterization.