One other consideration ... with a Jazz style bass you don't even need to take the strings off in order to remove the pickguard. Now changing the bridge and the tuners, yes you will have to take the strings off, but that won't hurt anything. One last thing, before you change the bridge and tuners, you'll have to ask yourself, is it really necessary?
You can call me ...Cliff.
"If I could walk that way, I wouldn't need the talcum powder."