How long till cultivation?

Hi mate, I'd say you've got another 3 or 4 weeks left yet. In regards to humidity, 80% is very high for flower. You want to be at around 40%. You should be thinking about increasing your tents air exchange, this can be achieved by using a bigger exhaust fan or you may even need a dehumidifier. When your humidity is that high you run the risk of bud rot. I'd get some fans inside blowing air around your canopy and look at getting that humidity down mate. Hope this helps 🙂