Scott, does the new pond have SMB-friendly spawning susbtrate? If not, are you planning on putting some in?
I agree with Bruce that keeping tabs on BG overpopulation will be an issue, but control should be possible in 2/3 acre (perhaps with trapping to help). If the YP don't make it, I think you WILL need to keep after BG numbers. If the YP thrive, the population dynamics will be interesting.