Hi - The '99 MS has 143k on it, and as expected - doesn't feel great in the front end.

Most noticably there's more play in the steering wheel than I feel there should be. I can reach through the driver's side wheel well and move the shaft back and forth a few degrees (5-10?) and see absolutely no movement on the output side of the steering gear (my '95 with ~200k had a similar problem).
Also I'm noticing some knocks/pops when it hits bumps at low speed.

Would it be worthwhile to do an entire front end kit (all 4 ball joints, all 4 tie rods ends)? What about pitman/idler arms?
Is there a particular part I should be focusing on - considering the symptoms?

I assume if I'm going to tear into it the wise thing to do is just replace everything - especially given the mileage.

General thoughs or suggestions, tips for completing the work?
How much time should I give myself - being a semi-competent DIY'er, but without much experience doing front end work (an inner cv boot on my '95 LS)?