Aurelle, if all you're going to dedicate is 15 Intelligence to Summoner on top of your other restriction then I'd recommend you stay on Black Mage and not bother. You can still pull it off and do your part, but consider these things:

1) Your damage will already be severely capped due to equipment and stat allotment decisions.
2) A Summoner casting Resurrection takes a noticeable hit on DPS unless it's swiftcasted, and even on certain instances like Turn 3(8), where your MP is so important, the huge chunk of mana that will be gone with that raise will result in a loss no matter what. Add this to the previous point.
3) Scholar does not need those points in Mind for anything in the game right now. The best example of this is the first clear of Turn4(9) by BlueGarter where their Scholar was using his points on Vitality to endure the dives and AoEs (this was a long time ago but I think he was, or was it Turn 5? Regardless, you don't need those points for it.)

So, with this said, I strongly suggest you re-spec to full Intelligence if you are still considering switching.