Before I did anything I would clean the engine and power steering with engine cleaner and get all the oil and fluid off and see where it returns.

As long a the power steering fluid is full and there isn't a puddle on the ground every morning I would not consider it an urgent issue.

If there is a coolant leak once the engine is up to operating temp you should be able to see how much and where the leak is. Coolant leaks are a critical issue as low coolant can cause engine damage from overheating and some leaks are indications a hose it about to split which will leave you stranded and can cause engine damage very quickly.

I would top off the oil after the engine is clean to determine if the leak is there and how bad it is.

Unless the axle is making noises indicating bearings are gone, I might just have the boot and lube replaced. Since you don't know how long it has been that way there is a better chance the axle does need to be replaced. I would want to see if there is any lube left in the boot. If it is dry or I see any rust I would replace it.

Bad suspensions parts change alignment. Usually the rest of the suspension is also worn if those parts haven't already been replaced. I would want to know how bad the problem is. Out of alignment specs will cause tire wear. If it can be properly aligned I would not call it an urgent issue.

I would make sure to resolve the cooling system issues ASAP. If the other hoses look the same same age, the best practice is to replace all coolant hoses, and some replace the water pump at the same time. I don't necessarily replace the water pump but I do inspect it very closely for telltale signs of any leaking.

As far as costs, it depends the local cost per labor hour and what brand parts the Indy is quoting so it is difficult to comment on the costs.

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas