Is it possible to hit puberty early but start periods late?

Yes. Puberty typically occurs prior to having a period. It usually takes about 2 years from the onset of pubertal changes to the start of menarche, or the first period.
? definitions ? Puberty is a transition and some define it differently than others. Some include the activity of odor glands in the armpits but these can precede true puberty by years. In girls, nipple enlargement is the first prominent sign and should occur by 11 with menarche within 3 years or no later than 15. Puberty varies in length but is usually consistent in sequence of changes.