I would like to ask some opinions on the following matter:

I've been training Kung Fu (Eagle Claw, Lau Fat Mang lineage) for a year or so. Classes last from 90 to 120 minutes each, three times a week. I've been also hitting the gym four or five times per week for two years now, and running for half an hour on the nights I don't have Kung Fu classes.

I am now thinking that I should drop the gym (my weight is 71kg, 9,8% body fat - measured three months ago - and I'm 1,67m tall) and focusing on martial arts. The fact is, training Kung Fu alone may be not enough to be satisfied. I do have the option to join some Kickboxing classes - 1 hour per class, two times per week. I've watched a trial class of that and it was great, really intensive. Problem is, kickboxing classes occur on the same day of the Kung Fu classes, with 30 minutes of interval between them.

I think I could attend to both and drop the gym, and go running on the nights without training. I've also read some about training two martial arts at once and that seem ok if you're focused, but what about training them both on the same day?