I use the Pearl Resorts for clients all the time in French Polynesia. They're fantastic and often you can get special discounts if you stay at their properties on different islands. You can end up with free nights and sometimes even breakfast included (right at a $60-80 savings on Bora Bora). Moorea is great for activities (swimming with dolphins, motu picnics, 4x4 safaris) and Bora Bora is perfect for getting away from it all. I wouldn't spend more than a day on Tahiti...two at the most. Congratulations and happy planning!