To avoid political disaster, conservatives must find support from minority groups. For this reason, grassroots organization must be well established and pre- pared to stand up. Heritage has a project called the New Majority which involves things like this, I think. California's CRI had such people in front, and this contributed significantly to its success. In addition to gaining minority support ahead of time, conservatives ought to take genuine policy positions that engender minorities and racial harmony in general.
School choice is one.
Although implementation is a headache, in ten years it would do more significant things to improve the lot of minorities than any undeserved scholarship. Contrary to those who feel that minorities would get stuck with the poor schools that are left over as choices, I believe that the best schools would become entrepreneurs, and many districts would eventually reach a point where, like a local college, one high quality high school would educate many of the kids in the area on a large, central campus. This is called an economy of scale. In business, it occurs when a firm becomes so efficient that it can outdo all competitors. Other measures could include enterprise zones and more crime prevention efforts in inner cities.