"I am thinking of only putting part of it up so its not too high with her only been a little kitten."

Hi Salem, Welcome to the club! You have a gorgeous girl and will no doubt be very happy for a long time! I would simply put the cat tree up in its entirety - Kittens love climbing, and Bengals like to be above you, so it should help with socialising her and bringing her confidence up!

With the toys, etc, rotate them regularly so she doesn't get bored. Try to use the same litter the breeder does initially, as this will make the transition to your home less daunting, and take slow, small steps if you want to change her food. It should take about 5 weeks to change completely - Make sure it's a good quality (high meat %) food, and plenty of fresh water - even a fountain!