I would consdier starting out with a little less test. If you are starting this plan having no gear in your system, you should be able to make progress with 500 mg. Then slowly increase as you go. The same dose is going to be less effective at wk 17 than it is at wk 3. So I'd slowly increase when the same dose seems to be less effective and if you are an experienced user, maybe even go a little higher than 750mg.