Olly,
You will not die. Make sure you have a good sleeping bag, bivi bag and sleeping mat and you will be alright. (Take a stove if you can)
However, i’d probably give the deserted village/huts below Hound Tor a miss. It’s a Heritage Site and camping/biving is prohibited.
This time of year, I’d probably head to Princetown. Enjoy a drink in the Plume of Feathers until late in the evening and then head South West along track towards South Hessary Tor. Carry on until you reach Older Bridge at GRID REF: SX 598 705. Only 4km from the pub. You could camp here at Older Bridge (nice flat area if you have a tent) or continue due south for 200/300 metres (Towards Drivage Bottom.) There are a few little sheltered spots in amongst the clitter and tin workings if you just want to jump into your bivi bag….. (BE CAREFUL!!!! and don’t fall in to an old mine!)
Best thing is that all of this route is on the Burrator/Sheeps Tor loop. You could be up early next morning and finish the route (about 20km altogether) and be back in the Foxtor Cafe for Breakfast at about 9/10 ish.
Also the bivi site is only 4 km away from civilization if it all goes bad during the night and you have to beat a hasty retreat.
Have fun.
PS…. If you park in the Main Carpark at Princetown, make sure you get a ticket….. only £1 and will save you a £25 fine! (Voice of experience here!)