If I was downsizing, I'd keep your two milkers and sell the rest.
We've got 9 in our herd currently, the 3 kids will go for meat once they hit 40kg and I think one of the breeding girls will go as well as she's failed to produce twice, got to fatten her up first! I won't buy any more than that, we've got a 4 month old baby as well so time is precious!