Couple Cooling system questions...

[Andrebxp]

Hello! I'm not too active on here, but I've got a few questions someone might be able to answer.

So I found my X5 dripping coolant last night and today I decided to pop the hood and see what blew. After some poking around I determined that the upper rad hose connection to the Thermostat/Waterpump was leaking.

I'm new to the X5, but not new to BMWs (I have an E46 and E39). As usual preventative maintenance is the name of the game. On the E46 the expansion tank is the Achilles heel of the cooling system, as is the radiator on the E39. What are the common E53 cooling system failures? Water-pump and thermostat were replaced in 2012 and I'm replacing the upper and lower rad hoses. The X5 cooling system is much more complicated than my E46 so I'm at a bit of loss as to which hoses I should replace in addition. Car is an '01 X5 4.4i with 80k on the clock.

I've also got a clunk that I've narrowed down to my swaybar + endlinks and a SES light (that's no longer intermittent) due some vacuum leak. Have to take care of all that, stick in some fresh fluids, and hopefully it'll be ready for winter.