Plainsgame rifle for a lady's 1st safari

[Razorback]

I will going on Safari with a lady friend in May. She is lefthanded and cannot use my rifles. She does not have a rifle with enough caliber to use on African plainsgame. My PH suggest a 30.06.

Informs me that most shots will not be "long". She plans to take a Kudu and wildebeast and smaller game. Will a 30.06 be enough gun ? Any other suggestions ? What barrel lenght would be best? I think weight will be important for her. She likes the lighter shotguns and is more accurate with them. She is a strong lady for her small size. Suggested makes with least recoil ?

Also I am going to purchase a big bore rifle for myself as I plan to go back next year for buffalo and lion. I think I will go with a .416 over a .375 but have not made a final decision. Can I use a .416 on plainsgame as I would like to field test the rifle this year ? Any suggestions on barrel length and the Rigby verses Rem Mag ?

Thanbks for your help