those bikes are too small... i mean you could ride it, but you should get one of the bis brotheres of those bike... the honda crf230, yamaha tt-r 230/225... since your 6'2 you could ride these bikes no problem... my sister is 5'1 and she could ride the 230...
so go with one of these bigger ones..they're all 4 stroke... and great beginner bikes..
hope i helped...