Mark, we all feel for your situation. Most have been there all be it not as extreme as yours. In the first few months of owning my 152 I replaced the vacuum pump, starter, exhaust parts and battery.
In the past 3 years I've replaced the altinator and power regul something or other, mags, plugs, harness, both solenoids, tach, fuel senders and master switch.
Everything firewall forward is new except for the engine itself, prop and carb.
Look on the positive side. You will know what you have when your done.
Finally I can't agree more with Brian above. Saving for the purchase isn't everything. It's wise to have a reserve from the get go.
