Thanks for the great input. I have laid out a preliminary plan. Driving from Indiana to Ennis, MT, fishing the Madison and camping just south of Ennis. Taking the Gravelly Ridge Rd. South to the Centennial Valley and East to the Henry's Fork for a couple days of fishing. Headed to Crater of the Moon NM for a day, then onto Stanley for a couple days of fishing the Salmon River and spending time in Stanley. Up through McCall, fishing the Clearwater, Lochsa, and Selway Rivers, taking 12 into Missoula and then onto Big Timber to visit cousins and fish the Boulder River at one of my cousins cabin. Plenty of time to adjust.
Gravelly is very cool. Ennis is great! Everything else is great too. On the Clearwater (Kelly Creek?) the fishing was very productive but for me is was better further downstream from Kelly Creek but it was great scenery, etc. Near Stanley you could fish Big Wood, Lost River, Silver Creek too.