I’ve a lot of catching up to do haha
Yep you better get started ASAP
Just for your information Season 1 to 6 is on boxsets until the 31st of May, where Season 7 leaves on the 14th of May according to my NowTV App on my phone.
Season 8 starts on the 15th April where each episode will be broadcasted each week and will be on catch-up for 30 days from it's air date.
So if you want to watch Season 8 you want to aim to get Seasons 1 to 7 finished out of the way before end of April or early May at the latest to be within the 30 day window time frame.