Backpack--moose river/west canada lakes??

Trying to plan a 4-5 day backpack in the ADK's and trying for a loop so we can use one car. Were thinking of going in at Pillsbury Mtn., heading past Sampson Lake to West Canada/Brooktrout Lake Leanto's, then heading north on Trail 120 (on National Geographic maps), then heading east again on Trail 119 that leads toward Lost Pond and heading out via Cedar Lakes and back to the Pillsbury Mtn. parking area. Map doesn't show any campsites along a fairly long stretch of Trail 119. Is anyone familiar with that area who could offer some detail for us--nature of the trail, any campsites, etc.? Certainly open to other suggestions for a 4-5 day loop assuming somewhere between 6-9 miles a day for two aging but enthusiastic hikers.
thanks
Gerry and Mark