Think you might be in luck. The design that been passed having planing permission means the current seats stay exactly as they are now so no need to change seat. The Kop redevelopment covers 4 issues.
1: New much larger concourse area will be added to the back on the Kop, new toilets, kiosks and bars, all under cover.
2: Removal of the pillars, meaning no more restricted view seats.
3: An extra 3,200 seats added to the back behind the current stand, all at a steeper angle.
4: An office block will be added between the Kop and South stand meaning the whole stadium is fully enclosed.