Activities for preschoolers

Hubs and I have decided to take H out of preschool next year. We haven't actually told the school yet, but I think we're pretty much convinced that this will do H good. There's nothing wrong with H's current preschool but we feel that since H is already quite advanced academically (we don't want him to learn the same stuff over and over again), he should spend more time just PLAYING!

This must sound so wrong... hehehe. To be honest, a part of me (my kiasu bit) was initially quite hesitant about the idea of taking him out of school. I mean, although H already knows most of the stuff that are taught in school, he must be still learning something new. Besides, the whole idea of sending him to school is to teach him how to socialise and gain independence. But I have since come to terms with the decision. Although H will not be going to school next year, there are 3 things that we must find other ways for him to achieve:

1. Making friends and socialising
2. Building confidence  
3. Learning Mandarin 

So I guess I have until end of the year to find activities and enrichment programmes for H next year. He can spend 1-2 hours a day in organised activities, and the rest of his day indulging in free play.

Here are some of the potential activities on top of my head:

1. Sports - H went for his first tennis trial lesson last Saturday and he loved it. Maybe we can include other sports activities like learning how to swim, taekwando, etc.
2. Mandarin class - maybe 2-3 times a week. I'm still uncertain if I should put him back in Bao Bei or let him try something different. At 5 years old next year, should the focus be on character recognition/reading or speaking/listening?
3. EduDrama - we will continue his weekly edudrama class. He seems to like it a lot although the teacher says he wouldn't participate during drama time.
4. Fastrackids - I haven't really checked it out but I like what I read about the programme. They cover a wide range of topics such as biology, technology, natural science, astronomy, earth science, economics, etc. This will be fantastic for H since he is very inquisitive and have shown keen interest in knowing about the world and how things work. For example, during the Olympics season, he was so obsessed with the games that he chose to watch the Olympics over his cartoons. He learnt about the different games and their rules as well as flags of the different countries. Then last weekend, he saw a youtube clip of the 2004 Tsunami in Phuket (don't ask me why daddy was watching it), and the whole weekend we were bombarded with why why and more whys. We had to explain to him what causes Tsunami, about earthquakes, about what causes earthquakes, and the list goes on.

Any ideas of what other activities/programmes I should explore for H?