Should I trade my car or keep it?

What is your question?

I have an Acura 1996 TL 2.5 with 110k miles.Leather seats are showing wear and spliting in areas. I purchased it with 17k miles. I sale value is est at $1800. I am starting to have issues with a/c.heater blowers, power window motor, brakes/rotors/cv boot replacement and a leak in the slow oil leak. (no sure where that is coming from) I am sure it could use new plugs/wires and who knows what else. I could take my money and put it into the car and repair everything OR I am thinking about purchasing a Caddy 2005 sts with 89k miles for $12k. Any advise on what your thoughts would be? I would greatly appreciate it. The Caddy is at a dealership and has had new pads/new tires and there were no other motor issues detected.