You're putting fixed costs into your per mile cost, that will artificially inflate your cost per mile.
So Here are my numbers for 2015 I am part time pull a cover wagon only run about 5 states 2 to 5 loads a week. Away from home about two nights a week. Loaded miles 50,601 75% line haul $106,052 FSC $15,747 Other tarp $6,057 Variable cost Fuel $35,371 Fuel tax $925 Truck maint $4,247 Small tools supplies $1,111 Misc $75 Total $41,967 Fixed cost Trailer payment $9,158 Lic permits $2,703 Bob ins $420 Occ acc phy damage $2,484 Accounting $838 Total $16,966 Total expenses $58,933 Miles to break even 9,995