No, it's not too big, although do consider how you'll deal with water changes later; you won't need to do any for a while, if you fishless cycle, but you will eventually, plus there's heating and lighting costs to be thought about.
I'm not trying to put you off though! It's a great sized tank and would give you loads of options.
I'm not trying to put you off though! It's a great sized tank and would give you loads of options.