I use the JurassiCal from your first link (fyi please use the edit button when available, double-posting is not nice). As far as vitamin A goes, I recommend using Herptivite for most dustings but using Reptivite once a month. Reptivite has preformed vitamin A while Herptivite has Beta Carotene. I try to use vitamins as sparingly as possible, but my chameleon lives outside. I usually give calcium once a week and Herptivite once a week (Reptivite instead at the end of the month). As my chameleon lives outside I don't supplement any D3, but you should.