Pocatello to Syracuse Ride

Planning on riding from Pocatello to Syracuse on October 4th. Here is the plan:

0515 - arise (Shower, breakfast, prepare drinks/bike)
0545 - depart Pocatello
0803 - sun rises (@34 miles (Arimo)- assuming only 15 mph avg in dark, 17.5 mph average daylight)
0840 - Downey (45 miles)
1030 - Arrive in Preston ( 74 miles)
1200 - Arrive in Logan (100 miles) STOP FOR LUNCH at park @ 900 N 100 W.
1230 - Leave for home
1430 - Brigham City (125 miles) (Assuming Logan Pass avg is 12.5 mph, 17.5mph avg the rest of the way)
1530 - Slaterville (142 miles)
1630 - Home (157 miles)

Here is the planned route:


Here is the elevation with a few points along the way. Click on it for a larger view. I'm willing to do this ride alone, but would prefer to have one or two other people as company and for rotating the lead.