If you want a 2bd unit at WKORV/WKORVN/Nanea for prime weeks (summer, holidays, whale season) you should buy a deeded week which is exactly what you want (resale, of course); those reservations can be difficult. If you don't need prime weeks, you could purchase a 2bd Kierland unit and use the StarOptions to reserve Ka'anapali at the eight month mark (Kierland is not only cheaper to buy, but the MF's are also a third less).
Do not buy IV at WKORV; too many of those units are parking lot views (IV at WKORVN does not have this issue). I would never buy Resort View at Nanea; about 20% of Resort View units at Nanea look at a parking garage (others here will disagree with that).
Read the stickies for a discussion about mandatory/voluntary; the distinction is critical for resale units. WKORV, WKORVN, and Kierland are all mandatory. Nanea is voluntary.