Hi Loi, firstly if you are using LR4 or 5 the Clarity is down to a third of that unless you have LR3, it has been dramatically changed, unless you want a 'gritty' look?
I like the cute aspect of the image, likewise the framing and the techs are good too. The two issues i do have are the colour cast & the vibrancy of the grass in the FG. As you well know, likewise a few others here, the WB IMHO is the key and first base for any workflow, well apart from getting the exposure right, but you have that. For me, there seems to be a red cast in the subjects and if I adjust the tint I can almost get a 50/50/50 mid grey reading which addresses the cast for me. I agree on pushing the sharpening, likewise a bit more in the Curves & Selective colour in the neutrals & blacks just to add a bit more depth to the definition within the two elephants.
Loi this is quiet subjective and just my take, be interested to hear what you think. Loi I'm just wondering about this cast, so if I send you an image with a set WB nothing more, perhaps compare the two to see if it's your monitor?
Regarding the AF I would think it strange to be intermittent, as your birds & antelope are sharp, so it might just be...
TFS
Steve