You should go with 25spr rest str.
25 spr adds 5% crit rate and + the crit rate from crossbows/bows, and cs items.
But dont put more then 25spr as it isnt worth it.
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Trying to stick to fiesta for two weeks.
5% crit from spr + good crit from weap = pwnage. Rest in str to build up your average damage and you'll be good to go. If you have trouble with aim (which you shouldn't at mobs of your own lvl) just use an aim scroll.
i have to say, I went from having all end gear to all dex gear and at the higher end of dex, i have monsters miss me quite frequently :P i also match this with high str so both my dex and str are +350 so not getting hit as often and dishing out lots of damage makes my cleric have to do less healing for me ^^