You need to decide which is your primary damage source, as what I see, Sorcerer is your AoE damage source (go full SPR), and FF is your Single Target damage source (go full INT).
I would say that go full SPR is better, SPR matter much more to Summon compare INT to FF, condition is when you have >4k Matk of weapon.
SPR also more handy for you to do quest and exploration, when you doing smt in quest, let the summon strong enough to kill things that will disrupt you.
Then in the future, when Stats Reset item given only consider to re-stat.
Each point SPR add 0.3% attack of your summon, 400 SPR is like 120% that scale base your Weapon Matk and Summon’s Skill Damage % (usually 200-400%)
But 400 INT is like 1000 Matk, when you already have 4k Matk, it is like 25% improve only, but when you have 6k Matk, you have like 16% improve only.
*For Beginner in this thread, I suggest go back read post start from September until now.