As a general rule of thumb, no matter what the sport, raw novices should not worry about making a lower weight class. Just find one you're comfortable in.
Your weight and body composition will change as you train and there's no benefit in derailing that for a competition that doesn't matter.
Later on, when you're more advanced, this will change and the best strategy will be to be a little over the limit and cut back just before the weigh-in. Don't worry about it after less than a year of training though.