Only you and your money can decide that. Just keep in mind that $800 is the starting point, and it's not even close to what it will take to complete. You may run into lots of little expenses while swapping and those costs add up in a big hurry. Things like changing out the brake lines while you've got everything apart, or using new body mount bushings. Hmm, the wiring on this thing is marginal, I think I'll replace the harness while I'm at it.

This kind of stuff will eat you out of house and home, so keep it in the consideration of the original $800.