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Less trail make for quicker steering, but less stability.
More rake = less trail.
You have two option;
650b wheels with 45mm tyres, smaller wheel will lessen the trail slightly (from 64mm of trail to a reasonable 58mm trail).
Go for a fork with a 55mm rake, give you a trail of 59mm, with 650b 45mm tyres, 53mm trail*.
*To give you an idea, a typical road race bike have 56=57mm of trail.
This will make it handle slower, not faster.