Just adequate? Unless the OP is planning on hooking up to a really big trailer then the 454 is MORE than adequate. If he is hooking up to a huge trailer then he'd be better off with a diesel. Either way, I stand by my recommendation of sticking with the 454.
The thing I see on this forum is that people (myself included) often try to pursuade posters to go bigger and bigger and bigger, even if it's not needed. In this case if it's a daily driver pulling a moderately sized trailer on occasion then a 454 will do just fine and save a little bit of gas in the process.