You'll want to play the Kapalua courses. I think the Plantation is the hardest. Then the Village course.
Staying at the following resorts give resort rates: Kapalua Bay (Starwood), Kapalua Villas (condo), Ritz Carlton @ Kapalua.
You might want to check out the golf packages given by each property as they offer unlimited golf in April. If not, after playing a round, think about the replay rate which is quite reasonable.
Hope this helps.