It is probably best to leave the sear geometry last, after ensuring that all other causes (such as wood shrinkage etc) can be ruled out. Sear work is one of those "once done cannot be undone" things and I have seen some high end double ruined by a rush to change the sears. All by skilled smiths who were too busy or too lazy to proceed cautiously. Like they say, fools rush where angels fear to tread etc.
“Once done cannot be undone”
What a load of crap. I just did exactly that….a FH Greener that came to me with 2 lb hair triggers, and now they are 4 and 4.5 pounds, accomplished by doing a legit trigger job aka changing the geometry of the sear/tumbler bent.
Before ANY trigger work is done by a legit gunsmith, all other factors are considered, this is accomplished by that skilled gunsmith inspecting the parts to include the wood.
A “skilled” gunsmith doesn’t botch a trigger job. I think your definition of “skilled” is too easily handed out.