In simple money terms, you must find out what it costs to fix the problems, compared to the value of the car afterwards. If you are strongly attached to it, you may decide the fix is worth it. My vague guess is that the car's intrinsic value isn't high. If it's otherwise in decent nick - the mileage is very reasonable - it may make sense?

Yep all simple enough fixes if you diy them with parts from breakers.

Might be worth taking all the carpets out for a week, put them out in the sun where you can wash them properly and let the sun dry them thoroughly, get some air to the underlay too which is probably still damp and where the smell probably is.

Door handles might just need some fettling and lubrication to get them working again.

Drivers door wiring has probably broken where it flexes, get a simple compass point circuit tester, find the break the old way and fix it.

Edited by gordonbennet on 15/04/2015 at 17:46