I'm going on a 5 day camping trip with my brother that we sort of just decided to do last minute and I am wondering if we'll be warm enough with this setup. I have a sleeping bag that's rated for "as low as 6 Celsius" and we'll be sharing a tent. I bought this insulated sleeping pad too. We're gonna put a tarp under our tent and I have some wool blankets, thermal underwear/shirt, wool socks.. We'll be fine right? The weather will be rainy and as low as 4 Celsius at night. Assuming we don't get our stuff soaked I think it should be fine but what do you think?