I've divided the goal into three phases:
1- Basic (beginner): by finishing this phase I should know the basics and the tones and be able to write some basic radicals. Also be able to say full sentences (basic and common)
2- Intermediate: Be able to listen and guess the context. Say more complex sentences. Can write full sentences
3- High intermediate: Be able to listen and speak with the help of somone
After finishing these three phases I think the next step should be to start practicing with someone.