Hey welcome to the forum. sorry you had to start off with a post like that...
The fact that you have a coolant smell inside the car and white smoke out the exhaust, leads me to belive you have a bad heater core and Blown Head Gasket.
You can get engines off ebay, and total cost of getting a new engine and swaping out the old one should be around $1300-$2000 (depending on how much you pay for the engine and the labor cost)
I would recomend using the search to see who has replaced their engines... I know a couple of people have done it, talk to them.
I would recomend starting off with checking the heater core.... it would be cheaper to fix/replace that first.... and then if the problem is still there, move on to the engine.