I know I'm new to this forum ,I am not new to foreign hunting travel nor Africa,soooo, please tell me you ARE joking?

The precedent you set,if indeed you are serious, makes it terrible for other hunters, as well as the safari workers themselves in their future expectations.

in the past,I have given rifles/shotguns as gifts/tips, as well as other items and cash.
All were well received and appreciated and to my knowledge, I was never considered cheap.
(I understand leaving weapons as tips is more difficult than in the past.)

But for those of us that struggle to get to do 3 to 4 African trips in a lifetime ,these percentages of the safari cost are unreasonable numbers you propose.