I am not aware of either of the hotels, but in all likelihood, they are located in the surrounding area which includes I-4, 192 (the maingate), or International Drive. Let me tell you from experience, these highways can be a nightmare, morning and night. With the June crowds (we have been there that same week, and the week before), you will be wasting valuable park time sitting in traffic. Even if your off-site hotel offers a shuttle to WDW, you have no way of knowing (1)How many vehicles they have (2) operating schedules and intervals (3) How long it will take to get to the parks.
I strongly recommend staying on site (All Stars is just fine). It is worth the extra $$$ even if you have to cut the budget in other areas (food, souveniers, etc.).
Let your families know that you are planning this spectacular trip. At gift giving time, maybe they could help you monetarily, or with Disney Dollars.