The problem with that method comes back to 'pin a rosette of (pick your colour of choice) on a (pick you animal of choice) and the candidate still gets voted in despite having next to no knowledge of local issues.
If it were me then I'd vote Izzard just to put the cat among the pigeons. Otherwise Birgit Miller as at least she's local - well lived in the city for a number of years even if it isn't in the Brighton Pavilion constituency.