Lens rental advice

[rugby414]

Hi Everyone!

So I'm lucky enough to be going to Kenya for a safari over christmas and am looking to rent an appropriate lens for the adventure. The problem is I'm living in Switzerland right and my searches aren't coming up with any options. I'll be meeting up with my brother who lives in the US, so could have a rental shipped to him, but means I wouldn't be able to test it out so if there are any issues I'll be out of luck. So three questions:

1) Does anyone know of a good lens rental site in Switzerland/Europe?

2) If I can't find somewhere local is it worth renting and having my brother bring it with him? Has anyone had issues with receiving lenses with issues?

3) Any suggestions for what to rent? Right now I'm thinking a 200-400, but still researching the best option. Also open to any suggestions on what to take with me.

My current kit is:
Nikon D700
Nikon D60
Nikon 18-55mm kit lens
Nikon 24-70mm f2.8
Nikon 50mm f1.8
Sigma 70-300mm f4-5.6 APO

Thanks for the help!