if you only put the yellow spring on the trigger and not the hammer, light primer strikes shouldnt be an issue.
if you bob your hammer then you should be able to put the yellow spring on there as well. with the lighter hammer the yellow should be able to build enough inertia for it to not be an issue.
with an unmodified hammer if you stay with the mil spec hammer spring, paired with the yellow on the trigger you should get both a reduction in pull weight along with a nice solid firing pin strike.