Vehicle maintenance advice?

[BustedKnuckles]

Hello Everyone!

I just purchased a 2007 X5 4.8l sport package with 77K miles.
I'm big into car maintenance and wanted to get everyone's input on things to look out for and recommendations on things to replace/check right now.

A few things I've already done...

~ Liqui Moly 5W-30 "Top Tec 4605" oil change as soon as I got it and another change 300 miles later. (trying to flush out old oil)
~ Purchased OEM coolant and will be replacing it in a week or so (I looked at Motul coolant but wanted to get input on it first)
~ K&N drop-in air filters
~ Brembo brake pads (thought about CarboTech pads but also wanted input first.)
~ LUX Angel Eyes
~ WeissLicht LED fog lights
~ WeissLicht LED turn signals
~ LED brake lights, license plate lights, and reverse lights. Everything is CANBUS but still hyper flashes. My car looks like a god damn laser light show for the first few seconds after startup...

I was also wanting to replace the trans fluid but the dealership wanted over $30 a liter! and they told me I needed 8 liters. Any alternatives? I am wanting to put the best of everything in my X5 but didn't know if there was stuff just as good or better at a better price.

It has the dark brown leather interior. The seats themselves are in immaculate shape and I hope to keep them that way. I tried two different leather conditioning products but wasn't happy with the results. Hard to buff out hazy finish with one (Griot's) and the other just didn't seem to penetrate and moisturize well (Lexol) . I ordered 4x bottles of Allen Edmunds "leather lotion" I've used it before on shoes and have always heard they make amazing leather care products. Anyone else have recommendations?

Oh yeah, and here's a crappy pic of it dirty in the driveway I just took real quick. Better ones to come..



I was hoping to get input on the things I have already done and suggestions on what else may be a good idea and things to look out for.
Thanks in advance everyone!!
~Nathan