Hi there Tinaco,
here is some useful information that will put you in the right direction regarding your set-up for bow hunting in RSA.
NEW NORMS AND STANDARTS AS PER GOVERNMENT GAZETTE 27 MAY 2011 No. 34326
Permissible bows for bow hunting
a) longbow
b) recurve bow
c) compound bow
(A) Minimum requirements for bow hunting
a) For wild or alien animals of a small size, including gamebirds, small carnivores, hares, hyraxes, rabbits and pygmy antelope, the-
(1) kinetic energy should not be less than 30ft/lbs; and
(2) arrow weight should not be less than 300 grains;
b) For wild or alien animals of medium size, including reedbuck, impala, blesbuck, warthog, bushpig, springbuck and nyala, the-
(1) kinetic energy should not be less than 50ft/lbs
(2) arrow weight should not be less than 380 grains;
c) For wild or alien animals of large size including wildebeest, kudu, gemsbuck, zebra, waterbuck, sable and hartebeest the-
(1) kinetic energy should not be less than 60ft/lbs; and
(2) arrow weight should not be less than 415 grains.
d) Cape buffalo, the-
(1) kinetic energy should not be less than 80ft/lbs; and
(2) arrow weight should not be less than 750 grains
e) Giraffe, the-
(1) kinetic energy should not be less than 90ft/lbs; and
(2) arrow weight should not be less than 750 grains
(B) In addition to the requirements contemplated in sub-paragraph (A) the following conditions apply with regards to the use of mechanical broad heads-
(a) for species contemplated in sub paragraph (A)(a), (A)(b), (A)(c), 5% additional kinetic energy is required.
(b) broad heads must have at least two cutting edges; and
(c) the minimum permitted arrow length is 50cm.
Just remember that shot placement is most important. Practice, Practice and Practice!!!!!!
If you have more questions regarding bow hunting in RSA feel free to contact me.