I'd suggest stat's ranging from 9-12, this gives a nice range for varity and allows use of some more than normal weapons while not giving the massive power boost that higher values do.
Enchanters are a bit diffrent if you want a bit of a challenge but not impossible, so are diviners, the first rules out Evocation so no magic missle and the second rules out conjuration so no flame arrows or mass summonings..
Under used weapons can also be fun, halberds, Morning stars, x-bows and dagger skills will lead you down the path less walked..
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-Jenn
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