Maintenance overhaul questions

I'm beginning to piece my lift together. Going to be ordering DSM uca's and a full ome set up from DSM.

So I figured while I'm at it I want to take care of some other things. Like changing the
-Diff fluid
-Rear Diff breather mod

-front and rear brakes (kinda were I need input and help I hear the ebc yellow stuff is good for lifted trucks when I get bigger tires, truck has 70k on it and original brakes feel fine but want to do preventative maintenance)
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-extended brake lines
-afe pro dry s drop in air filter
-cabin filter (oem unless anyone has better stuff)
-spark plugs

Is there anything else I should change? I just did my oil fully synthetic not long ago so it wont be do anytime soon.

Any suggestions or is the list pretty decent?