2008 RX400h repairs

I have found a really nice Lexus for sale with only 170,000km on it. It needs the following work done on it, left-hand rack end needs replacement, front shockers need replacing, timing belt is due, and possible radiator leak.

How big/expensive would this work be?

Would it be better to look for a different car, or get the work down and hope the car lasts another 170k km?

Any information would be great. Thanks.