Hi I was windering if anyone can help me out as I havent a clue about travel insurance. My trip is as follows

Im 22
Kenya
June 11th till August 5th
Flying with Virgin
1st week travel safari (around Niarobi)
7weeks volunteering in uplands at a local orphnage
No medical probelms

Which is the best insurance to go for? Back backers maybe? Also what do I need to ensure it includes e.g. minimum medical/baggage cover should be what.

Hope someone can help. Thank you