The 25mm front spindles will give a little more positive front feel, but it isn’t a big change.
Seat placement is different from manufacturer to manufacturer. Most have a seat placement chart of some kind. It’s based on your driver’s size and aims for somewhere from 41-44% front end weight bias usually, so if you’re in that range, you’re probably good.
Driver/Coach/Wrench : Innovative Performance/Exprit
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