The price on that 96 appears high. You should be able to do much better. They probably have it inflated because it is under 100K.
On your SSEi... the reason you had no power was because the PCM was pulling all your timing (aka power) due to the wrong fuel being burned. It'* about the equivalent of putting castor oil in a water cooler. People will live on it..but not well.
The SE was designed to run on lower octane and sounds like the right type of motor for your situation. Why not look around at more 00+'* .. have two different body styles in the driveway.