It's a personal choice, but Krav Maga would be excellent if integrated with MMA, boxing, or Muay Thai.
MMA will give you more skills overall than boxing; grappling, boxing, kicking. The transition of MMA skills into Krav Maga is very formidable with regards to self defense.
I've been practicing Krav Maga for years. Some of the most formidable kravists I know have a MMA, boxing, or Muay Thai, or BJJ background.
Best of luck.
Well "MMA" is more often than not is cross training any combination of Boxing, Muay Thai, wrestling, Judo and BJJ. Think of it like a triathlon for fighters, rather than a discipline of its own. Krav Maga is very basic but great for what it is. Basic striking, basic grappling, basic weapons and basic weapons defense. Its great for people with no prior martial arts experience who want to learn to defend themselves quickly, but not terribly deep. Wing Chun is a traditional martial art with traditions and a history that follows. Honestly Krav Maga will teach you to defend yourself the quickest, MMA will make you the best fighter, and Wing Chun is the most interesting & will offer more esoteric substance and anthropology. Since you didn't mention a interest in the historical and philosophical aspects, I'd recommend you spend at least a year in Krav Maga and then try MMA if you find martial arts to your liking. There is a lot of carry over between Krav Maga striking, and grappling skills to MMA basic striking and grappling skills. Probably because much of the Krav Maga striking and grappling syllabus comes from "high percentage"(i.e. basic) Kickboxing, Judo/wrestling and Jiu-Jitsu techniques. It will also help fill in the blanks of what MMA misses such as "dirty stuff", multiple attackers, weapons, and weapons defense. Krav is full contact with similar training methods to MMA, and if you hate Krav Maga chances are you'll hate MMA even more.
Now. The truth of the matter is you probably aren't going to run into Wanderlei Silva trying to mug you. Any of the aforementioned arts will be more than sufficient to teach you self defense. Why not try a Krav class, and a Wing Chun class to see which you may like better. If you like Krav better plan to stay there at least a year, and then transfer to a MMA gym to further your skills if you still wish to do so.
Wing Chun and boxing could conflict as they both have very different footwork,, strikes and training methods, but that being said still go with what you enjoy and see what works for you, though there are probably more synergisitc combinations out there.
Boxing with judo or wrestling for the takedowns is good.
Wingchun varies a lot, if yours doesn't have a share of takedowns and ground moves then the same as for boxing above.
The standard MMA combo would be to find a muay thai club and a jiu jitsu club (brazillian or otherwise)
*little note that muay thai is not the only kickboxing style and access to the others is getting better all the time, lethwai, savate etc
MMA is not for self defense krav maga is wing chun and boxing are intergreated in krav maga you can also try japanese ju jitsu
boxing is cool and my favorite sport but in MMA its not gonna be enough I suggest capoeira and Wing Chun but who knows how long it'll take you to learn both so keep these in mind and make your son learn them if you want him in the mma
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