Creating tourney team

The extra info helps.

You may be able to pull a team together that will perform respectably in the tournaments. If things go well, you may find that come spring the kids & parents don't want to go back to rec ball.

Parents:
Maybe more important to get good parents here than in rec ball. Because there are usually little to no restrictions (enforced restrictions, anyway) on changing teams, unlike rec ball. And the parents must understand that this level of ball is different than rec ball. Johnny may not be playing SS on this team, he may not even be a starter. And he may be batting ninth.
Set the parent expectations up front - playing time, positions, slot in the batting order. Make sure the parents' expectations for the team's performance aren't set too high.
Keep costs to a minimum for the first season. Grumbling is often highly correlated to how high the expense. The more bucks, the more expectations.

Players:
Ditto on the comments regarding playing time, positions, spot in the order. You need to ensure the kids that this is like all-stars, only tougher.
Good, smart players will adjust very quickly to the new rules with some work in practice. Don't let the different tournament rules scare you off a solid player who has only been playing LL Inc.

Coaching:
Make sure you are furnishing top notch coaching - good teaching, player development. This should accompany travel ball.
Adjust your game strategy to match the higher level of competition.
Make sure the players are prepared to deal with picks (pitcher & catcher), suicide squeeze, fake bunt/steals, timed pick plays, holding runners, etc.
Make sure they are prepared for any rule differences between their rec league & the tournaments.

Pitching:
You need at least nine pitchers, preferably more. Since you won't pitch a kid two days in a row, for Sat/Sun tournaments each kid will only pitch once. If you can, volunteer for the Friday night games. Start one pitcher ("A") on Friday, close with another ("B"). Then on Sunday, start B & close with A (assuming A went for more innings on Friday).
Control, pitching smarts & the ability to throw offspeed pitches for strikes are much more important than velocity. The fireballer who grooves pitches will quickly get whiplash.

Hitting:
1-9 need to be able to hit. You don't have to have sluggers. You will need hard contact (easy grounders & fly balls are easy outs), but not the long ball. You can win tournaments with singles & a few doubles - provided 1-9 can hit.

Defense:
Several catchers who can get the ball to the bag quicky & accurately. At 10YO, you won't be able to stop a fast runner stealing second very often. But you must throw out a slow runner stealing second & any runner stealing third. Catchers also need to be good at blocking the ball.
Your outfield will need to be more solid than in rec league. A weak outfield will eat you up in tournaments. Too many hits go out there.
Kids who can play more than one position well.

Speed:
Only one slow kid on the team at most, & he better be a heck of a hitter or pitcher to justify taking him.

Just a few thoughts. Let me know if you have any more questions.