try doing the course first and see how comfortable you are after the course (might have a different view after) and look to buy maybe on the down season ( thats my suggestion)
My personal suggestion is go with the 250 and get one used! You will prob change bikes in a season or two. You want to max your area of error and forgiveness of a bike! i think theres no point of getting a new bike just because you will prob upgrade to a new bigger bike after.
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