Well, what do you mean by fluent? :-)
I've been learning German for eleven months and has become fluent, but I have been living in Germany the whole time. I have also met loads of German learners during my stay there. This answer is my highly subjective guess at where you'll be in eight months based on this experience.
You'll be able to read books and newspapers without a dictionary, but not understand every word. Your vocabulary should be at least 4000 words and your English knowledge will enable you to guess the meaning of many other words.
With time and a dictionary you'll be able to construct well formed and correct sentences, but it will not sound native - your language simply won't have the correct "flow".
If you find other German learners or a German "Stammtisch" to practice with you will be able to get your point across, but inelegantly and with lots of errors. (For example errors with noun genders and expressions with fixed prepositions.) If you have only practiced alone you will not be able to say much, but will quickly pick it up as you get to Germany.
You will be able to understand learners of German, but will understand native Germans only when they make sure to speak slowly and clearly to you. When natives speak between themselves you will only be able to get the general idea of what they are talking about - or not even that.
This last paragraph may seem overly negative, but I have seen again and again foreign learners which can speak intelligently about almost any subject in German, but only with other foreigners. When speaking with natives it becomes all to evident that their listening skills are not up to par. Germans simply speak too fast for them.