Are you proposing lifting and dropping the Bullens Stand? I'm all up for retaining historic parts, but if we're gonna move Bullens, I'm afraid I'd be looking at demolishing it and building something more fit for human occupation.
Looking at the aerial view, removal of the two streets next to the school (and the school itself) would leave a very large footprint to build a new stadium, but that's already been quite heatedly discussed in this thread. I reckon a new main stand would have the least impact on the area.