Phewwwww....I'm exhausted just reading your plans...but love your excitement!
I was going to say the same thing as as Nige...you have loads of driving time that needs to be considered & the driving can be tiring between rough roads, poor signage, goats, cows, etc....but thankfully the main roads have improved drastically even in the time that I've lived here.
Other than that...I know you'll have a blast!!!