You'll do just fine. I've been playing dota since 2007, and when it comes to 5 vs 5 human players, its all but team play. Extraordinary skill set can be acquired with all heros in DOTA, some are easy, some are strtegic and some need superb reflexes to land a game-changer in the match.
Drow, venge, Ursa, tiny, viper, veno, huskar, sniper these heros can go all out from early-mid game and will still mange to kill/escape a 1 vs 3 situation with proper build and if the opponent is weak, they will start wrecking havoc right away, they also dont require much items to beef'em up for a decent carry.
Heros like apparition,rubic, invoker, necro, warlock, shadow demon require strategies, which affects you team play so much that few bad mistakes can cost you high and few tricky moves can turn the whole thing to ur favor.
Riki, brood, zeus, centaur, bounty, crixalis are bit reflex based, shift queing their actions in quick sucesstion gives you definite edge in combat and helps scoring last hit kills after a gank situations.