I would suggest doing two groups initially - Badgers and Beavers (seems to be your preferred options so far). Hold off on purchasing new uniform as long as possible (when it comes to having to have uniform, seek out 2nd hand) and see how it goes... see if your DD likes both equally, or feels one is better than the other. It could get expensive... but other girls of a similar age could easily be doing Swimming one night, Ballet another night, Rainbows/Beavers/Badgers another night. Some may go as far as adding in Musical Theatre as well - though children I've known who are budding actors, tend to not do Rainbows/Beavers/Badgers... just isn't the time, given rehearsals, auditions etc.
Camping: Check with groups with regards to their policies about taking children camping (such as from what age, if under canvas or indoor accommodation). Back in my Assistant Beaver Leader days, I don't recall us ever taking the Beavers camping. Did with Cubs, though not always under canvas. Back in my Cub Scout days (so mid 80's), Cubs certainly went camping under canvas.
The Cub Scout Promise (from back in my days, so mid 80's was)
I promise to do my best
to do my duty to god and to the Queen
to help other people
and keep the cub scout law.
Scoutbase: Cub Scout's
Beaver Scout Promise
I promise to do my best
To be kind and helpful
And to love God.
Scoutbase: Beavers
Badgers has a promise as well, though can't yet locate the wording.
Found it...
During the Badger Welcome Ceremony the Badger makes the following promise:
I (name) promise to be a good Badger and try to do my best, in absolutely everything.
The Badgers then say the Badger Code of Chivalry:
I want to treat all living things with kindness and concern,
I want to do my very best the Badger ways to learn,
In absolutely everything I do and think and say
I want to keep the promise I am making here today
Source: ST John Wales - Brigade Regulations (could be worth a read if you want to know more about Badgers and onwards)