Which of the following bonuses stack for overcoming SR?
Master Specialist:
Caster Level Increase: Upon reaching 6th level, add 1 to your caster level whenever you cast a spell of your chosen school.
Spell Penetration + Greater Spell Penetration (explicitly stack together)
Benefit You get a +2 bonus on caster level checks (1d20 + caster level) made to overcome a creature’s spell resistance.
Benefit You get a +2 bonus on caster level checks (1d20 + caster level) made to overcome a creature’s spell resistance. This bonus stacks with the one from Spell Penetration.
Orange Ioun Stone
+1 caster level