I wouldn't get either of those bikes. The Expert XL is wayyy too light and the weight limit on the forks is only 100 and the rims have a small weight limit and the junior is just too small.

Just go with the Intense Expert XL, and the other stuff you're ordering is fine. There's not much stuff you need to get with the bike, unless you want to spend a lot of money on cassette hubs. But for starting out, again, it's fine.