Planning backcountry trip for early august and in DIRE need of help!!

Hello!! My boyfriend and I are planning a 2 night/3 day backpacking trip in Glacier this August as a break in our cross country road trip. We are coming from the east so we figured Many, St. Marys or Two Medicine would be easiest, then we could drive through GTTS as we continue west. This is our first time there and we are so lost! If anybody has any recommendations for trips fitting our itinerary please let me know! We are generally flexible in terms of mileage (hopefully no more than 10ish mile days though) and would like something on the more secluded side for the coolest Glacier experience.

Any help/guidance would be greatly appreciated!