That's quite a big "to-do" list!
Let's look at each item in turn:
If the rust is purely cosmetic and not on any structural elements such as suspension mountings or sills then you can probably just ignore it - if not it it will need someone who knows what they are doing to cut out the rust and weld in replacement metal. This can get very expensive if it is extensive so this is probably the issue that should be assessed first as if it is going to need welding then that could well be a deal breaker straight off the bat
Airconditioning is purely a comfort thing - and depending on where you live and what the climate is like there this is probably something you can live with. Of course depending on what is wrong with it it may also be one of the easier and cheaper fixes - if it is simply in need of a re-gas this is cheap and cheerful. If there is a leak or a failure in the A/C pump or clutch then this can turn into something of a rabbit hole to chase down. I wouldn't even think about the A/C until you know whether the car is worth making roadworthy.
Same as the A/C really it's a very minor thing - the stereo in my daily driver died about a month or so ago and I've been making do with a cheap bluetooth speaker sat on the passenger seat and linked to my phone. This can go right to the bottom of the list along with the A/C
We're back on to the important things now - assuming the clutch has started slipping/failed then obviously you need this doing before you can consider the car useable. Clutch changes can be time-consuming to do on older cars as everything will be pretty well rusted tight and if the car in question is an all-wheel drive model it can further complicate things. Labor is the killer here - if you've got access to cheap/free labor or decent spannering skills yourself it can be viable. Otherwise get some quotes from a decent garage but be prepared for a rather high figure!
- Power Steering
You don't specify what is wrong with the PAS but assuming a pump failure as a worst case this generally isn't too bad. It does depend on where the pump is mounted in the engine bay of course as to how bad the labor is going to be, but if I recall correctly the 2.4 is a four-cylinder engine so shouldn't be too bad to get to. A reconditioned pump would save substantially over a new one.
Replacing tires is just a fact of life of car ownership and unless you are only planning on running the car for a few months you'll need to do this at some point anyway. As a relatively known quantity I'd just label this as something essential to do but that should be done only after the other mechanical issues are resolved.
Assuming this is a wear-related issue as opposed to something having gone wrong with the braking system then this is the same as tires really.
- Shock Absorbers
Oh dear.. the list of essentials continues to mount. Replacement shocks are quite expensive and even assuming the best case of only one really needing replacement you should replace the pair at minimum (unless the other side happens to be relatively new)
- Valve cover gasket, 11.Oil pan gasket, & 12.Oil cooler “O” ring
All relatively minor parts - and relatively easy to change on an I4 configuration engine. Probably the easiest mechanical bits to DIY
- Air filters
Just a simple service item - this would be cheap and easy to change. A pattern part filter and about half an hour and this is done.
As to whether you should do all of the above - only you can really decide that I'm afraid. In my opinion the cumulative list is a bit too big for my liking and unless you have good mechanical skills yourself or access to cheap labor this is going to mount up to quite an expensive enterprise on a 12 year old car that, no disrespect isn't anything special. If you were having to pay full labor rates somewhere I'd be surprised if you could get this list done for much cheaper then you would pay to pick up something else already roadworthy.