@Akowally
It usually works better the other way round... ''whats the best place to camp if our budget is xyz...'' coz am sure you have an estimate budget in mind.
Anywayz, you could try...
1. Lukenya Getaway -Athi River/Daystar area
2. Brackenhurst, Limuru - Dormitories would work best for your team.and being a church group..the environment is superb!
3.White waters,Sagana
4. Crayfish camp,Naivasha
5. Kws parks e.g Longonot,Hell's gate,Oldonyo Sabuk or Nairobi National park
6. Whistling thorns, Along the road between Kiserian & Isinya..
7. etc......
PS: If you would like Camping tents, Camping truck+ all camping gear, Cooks..etc Just drop me an email and i'll organize all for you at a very competitive rate

Nevermind what haters say, ignore them til they fade away - Just live your life