With all that training, so many calories are going to be burned up so if you want to gain muscle, you're gonna have to eat a hell of a lot. Then there is also the problem of over training so you'll have to be careful and make sure the muscles have time to rest.
As for losing fat at the same time as gaining muscle, it's not easy but check out the carb cycling diet
www.t-nation.com/free_online_article/sports_body_training_performance/the_carb_cycling_codexA little complicated to follow but it works. I have a client who got great results from it.
Personally, I think you're trying to do too much at the same time. If I were you I would just concentrate on the martial arts and also do a little bit of strength training (taking care not to overdo it) while eating enough food, and good quality, healthy food. The way your body looks will then take care of itself.
