No, right now it is too early to buy Bitcoin. Of course there is a chance that we will see 10000$ in the end op September and beginning of October. But I expect the Bitcoin will fall under 3000$ in spring of the next year.
If you want to be on the safe side and see some more days of green then before invest it is probably not a bad idea, giving all the instability in recent days. However around 6k seems a very strong support line. When the price fell to that level this year then volume increased and price bounced back quickly. There is also a good risk-reward ratio in that zone.