Advice hooking up my 1996 celica gt...., Just in case I don't sell my car ....... Options

[tataycelica]

Hi,

I'm trying to sell or trade my 1996 Celica GT. It has 5 speed transmission and 146K miles on it. I'm trying to sell it or trade with an automatic transmission car. Anyway, just in case that nobody grab the car. I'll try to hook it up. Here are some background of the car. The car has rust spots at lower part of the doors but still in great shape. Replacing it is optional. The body has no rust spots and it's excellent shape. How much do you think the doors will cost me if I choose to replace and paint it if I get a different color? Is it much better if I repaint the whole car? Any idea the cost of painting the whole car instead of the doors only?
I also found a set of kyb struts/shocks with tein springs at the junkyard. There's a totalled celica gt at the yard where I went to. I didn't get it yet because I'm still waiting if my car will be sold this month. They're asking 140 dollars for everything. Is it a good deal?
I'm going to need the front lip kit. How much do you think it will cost me?
My engine has 146K miles right now and pure stock. It's running excellent. How long do you think the engine will last? If ever I get tired of driving with my 2.2 engine. How much will it cost to do the 3sgte swap?
Any input is greatly appreciated. I just need a backup plan if ever no one grab it from me. I even lowered the price to 3100 or swap with a car with automatic transmission so that my wife can drive it.
Thank you very much.