6'2" isn't short, pal. If your making a Kickboxer then focus only on striking. Punches, kicks, striking defense, elbows, knees and clinch work. Don't forget the clinch work, I can't stress that enough. If speed is what you want then I would suggest your physicals look something like this:
Agility: Sensational/Elite
Flexibility: Sensational (You need this for kicks)
Speed: Elite (for countering strikes)
Strength: Sensational/Elite (It's your choice but I you want to dominate the clinch, it's not a bad way to go)
Conditioning: Elite (Obviously, fighters tire out too quickly)
Balance: Sensational (Helps you stay on your feet)
I'm suggesting those stats if you're making a 18 yr old project fighter. Those stats are what you want in the long run. If not make a 25 yr old with Useless Boxing, Wonderful Muay Thai, Respectible Wrestling and a white belt in BJJ. As for primaries, aim for Elite/Sensational Boxing and Muay Thai. Again if your not competing in top tier org, just build your 25 yr old to Wondeful Boxing and Wonderful Muay Thai. Your 25 yr old shoild have at least exceptional across all physicals before he'll be able to really put those striking skills to work. Trust me, I've built all my fighters this way. Hopes this helps.