Why do you factor 10 wis points? if you are starting with 6 wis points more... everything you do to get your wis higher i can do too, so in the end is 6 wis points, i dont think thats 25 sp of each wis point, i think its around 25 each 2 points of wis... but i m not sure... (unequip your +6 wis item and check how many spell points you lose).
In a monk splash obviously wis is more important, again, that would be 3 AC higher than someone starting with 6 less wis... now, how do you get enough ac for those 3 points to matter? most probably you spend a lot of items slots and some feats to get there, damaging your dps in the process.
In general i dont like monk splashes in a paladin for AC, but thats another matter.
Anyway, i would rather take cha 16 wis 8 on a dps paladin monk, than wis 14 cha 14, unless you have a +4 cha tome , and if i had a +4 cha tome i would start with con 14 and wis 10 rather than con 10 and wis 14, 40 hps are more important than 50 or 100 sp's in any melee toon.