People who can figure out words from radicals probably have >500 word vocabularies to begin with. I’d say if you started learning on some natural progression, you would start learning how to figure things out from radicals once you knew somewhere around 300 kanji (which would mean you have a vocabulary of 1,500 words, ish).
Before that point, you are probably going to have too much trouble generalizing.
Before that point, you are probably going to have too much trouble generalizing.