Richard,

 

Your trip doesnt show how you are going to reach Everest Base Camp, Kalapathhar.  Take a domestic flight to Lukla from Kathmandu, and then you need to walk to Kalapathhar, the Everest base camp.

 

Nepal is seeing a lot of tourist inflow now and it is safe for travel.  The maoists will not interrupt your travel, neither will they ask for donations.

 

Keep in mind there is an airport tax while flying out of nepal and you need to pay in cash.  No cards accepted i suppose.

 

There is an election coming up very soon so  you might be large masses and ralies but these are just publicity campaign for the election.

 

Have fun in Nepal!

 

Cheers!