Discounts depend on what resort category you're booking, and in which season. Disney has different pricing depending on what season you're booking, Value, Summer, Regular, Holiday, etc.
Moderate resort AP discounts can be 30 - 35%, Deluxe can be 40 - 42%, depends on your dates. Value Season generally gets the higher % discounts.
You can book an AAA room discount,now, then when other discounts come out, switch. Some discounts require you to book as a package, which is room + tickets (can include dining plan too). Some discounts can be booked as room only. So depends on what you plan on.
If you intend in the end to have a package, you could book as a package now. Saves the hassle of cancelling and refunding room only reservation & re-booking as a package.
Currently I'm booked with a general public discount package, for August, just waiting for the AP discounts to come out. Booking WDW vacays isn't for the feint of heart
