Hey friend, great choice going solar! For 3 Canadian Solar panels, I'd suggest getting the Canadian Solar 545W Mono Panel - Super High Power HIKU6 Mono Perc With MC4-EVO2, available for R2195 each. These are top-of-the-line high power panels. For a battery to store the solar energy, the Tesla Powerwall 2 for R164740 would be an excellent option. It has a high capacity and Tesla's quality and warranty are hard to beat. The Powerwall and 3 of the 545W panels should provide plenty of renewable power for your needs. Let me know if you have any other questions!
