05 X3 dealer repair. DIY or other choice or just ignore?

Hi Bimmer owners,

This just happen to me today: Went to dealer for an inspection I at 94500 mile, because the coolant light came up and I never took the car to dealer anymore after it passed warranty.

Advisor came back with following issue and cost:

1. Left driver side:
a. power window regulator is about to wear out.......................$475.00
b. front wheel rim bent.............................................. ........$465.00
2. drive belt cracked........................................... .......................$215.00
3. oil filter housing leaking .................................................. .......$840.00
4. rear differentiator leaking........................................... ............$390.00 (they say this is for the rear wheel rotation, for all wheel drive system)
5. suggested break fluid flush............................................. ................$140.00

This sums up to $2520.00, and I don't really know if I should processed.

Do any of you think I should go with dealer and get it done? How much money can I save with an indy car shop?

I don't see any leak drop on the ground. I would never know/notice all the above issue unless I had the car checked.

What do you guys think?
Thanks,
-Peter