Straight kicks and side kicks don't work in MMA.
Round kicks work, knees work, boxing works.
Skip TKD and do Muay Thai.
I beg to differ. I've thrown sidekicks in my last two MMA fights and nothing bad came out of it.
you cant find a good sambo place in the US. ive tried ><
cut all ties from TKD, its nothing but shit. when you look for a gym look for people to be teaching/training there that have the skill, abilities and accomplishments you want to have.
There's some super legit stuff in NY, but that might not be where you live.
Anyways, as for TKD... It really depends on the school you go to. To say that TKD is as efficient and immediately transferable as Muay Thai would be a lie, but if you're willing to go that extra mile, you can be successful with it... at a good school.
Wherever you're training, just make sure that you get good hard sparring, alive drilling, and that not TOO much time is spent on the poomse/kata/forms. If you're training boxing at the same time, it should cover TKD's biggest deficiency.
That said, boxing will be what you use more. Interestingly enough, they kind of compliment each other in that both use a sideways stance so it shouldn't be too hard to flow from your punches to kicks.
If you have no other options in the area, why not give it a shot? Just make sure you're doing lots of boxing.
PS: I got KO'd by a boxer/TKD guy once in sparring. He had NASTY hands (85 ammy boxing matches) and really unorthodox kicks. He guided me into a spinning back kick to the neck. I was out like a light.