My only worry is will I get too condensatey with it being a single skin?
I've used one of those Lidl single skinned tents in one of their earlier incarnations. Also a Halfords single skinned tent. I know they're only fifteen pounds but really, they're toys for kids to play with in the garden in high summer. I've spent a couple of the worst nights camping I've ever had in cheap single skinned tents.
Honestly, just don't do it!
However, I've used a Pro-action 1 (I paid £17.50 for mine) and a couple of Lidl double skinned tents costing under £25 and they've been excellent. Also a Gelert Eiger 2 was very good, and cheap.You don't need to necessarily spend a fortune, but single skinned tents are a waste of money.