Mount the cranks as you normally use. If you use anti-seize, be careful not to over-torque the spindle bolts, not because of fear of stripping, but because you can easily force a crank arm on too far and damage the arm.
Also note that Ti spindles aren't recommended for heavy mashers, since they are only 70% as strong as their CrMo counterparts, so flexing and breakage are more likely. (their history is such that they've proven adequate for most people, so don't read more into this than intended, it's only for heavy riders, or high torque pedal mashers (you know who you are)).
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