When should I learn to write kanji

I know some very basic phrases and now I'm expanding my vocabulary. Now I'm thinking if at this very beginner stage should I learn how to write them and if I should know how to write kanjis later them later then when?

Edit: Thanks for all the replies!!! I read all of your comments and I think the best for me is to learn how to write them while I learn the kanji. it just feels more complete and suits me better. Either way I'm in no hurry, I took like 9 months to learn kana lol.