My 9yo DD is "dogging" @ 3 hrs per week and maybe some weekend activities (with me) as well along with Piano (@ 4-5 hours per week including practice). Also, soccer in the Fall depending on the timing of practice it may delay the dog training which is probably 4-5 hours a week. I don't know that she's gifted at any of them but she likes to try things and I think it's OK to encourage that as long as you aren't driving yourself nuts with schedules (which only you can decide what works).

My 13 yo tried soccer and guitar at about the same frequency but really didn't find her passion until she started band. She now spends a lot of time on practicing that including during school since she has band for study hall. She gets lots of downtime which has been filled with recreational reading lately....