One girl One cup Challenge

Having just started a Sweet seeds + speed Auto, Red poison auto from sweet seeds was next on my list to be grown with Jack 47 in my arsenal after that. I'm already growing some sensible seeds strains so I didn't want to dip into them. I considered buying a seed for the 'one girl one cup challenge' aka Solo cup competition but knew I'd send myself crazy deciding which I should use. I had half decided I wanted to go Indica dominant as an entry for their shorter size anyway so...... after looking at images online of the Red Poison, I thought it would actually be a good choice. "....So a 16oz cup is a what now?" pint - no litre- no half pint - no 500ml - nope 473ml - yes, ah ha! 473ml = Nothing, the size doesn't exist in the UK. online I can get 10 delivers fow a few quid. I'm not paying that, I'll find something..... Closest ( It's near perfect to be honest) I found was an, ahem... recent... 30 and fab cup. I've videoed it's contents as proof I'm thinking as Indica she's gonna drink a lot (compared to sativas in my opinion) but I also have no drainage. Even though I think she may be a big drinker, I'm not worried about her drying out so much, she'll quickly bounce back from a drying out with a drink. I'm more worried of Over watering I still need to (at time of writing this) actually make a homemade tent first, buy some (probably 2) cheap bulb fixtures, I've still got some foil blanket left from other tents I've made and I've got some spare house hold LEDs I'll bang something together......