the drive from MCT to SAL.. is around 8hrs drive..
the problem, u wont have any phone contact for around 4 hours.. i guess the last place with the phone range is Adam, then u will be back around Haima then Thurmait until Salalah..
the timing is wrong as the weather is hot then muscat.. if it was around june or july it would be better..
why u dont try 2 get the RAFO flights..
anyway have fun..