At the coast you will be faced with white sandy beaches, palms, blue sky so I think a pola would be worthwhile.
Here is a little taster of what to expect
http://www.kenya-travel-safari.com/k...res/index.html
http://www.trekearth.com/gallery/Africa/Kenya/
You will certainly need the portable hard drive !!!!!!!!!
Don
PS You made it then !!!