That is IMO the best set you can get without the Zodiac (Full DET/CRIT)
This is an area where SMN is a bit too overcomplicated due to having a Pet.
The reason is because each of those stats effects the SMN and Pet at a different rate, as well as a different rate between even pet to pet. (i.e. Garuda benefits from Spell Speed but Ifrit gets 0 benefit)
A lot of what you will see is people like HavenChild pushing the limits of SMN and finding a noteable difference between gear sets. There is still a lot of work to really sort out the SMN stat weights, but considering the updates we may see in 3.0 there's no point now.
Here is a rough guide to follow, and is in no way 100% tested. (Ifrit only)
MAtk 4.1
INT 1
DET 0.24
Crit 0.14
SPD 0.0032
So that is equalized to 1 INT