Our first Tow!!

Hello everyone. We have finaly bought a caravan, Bailey Ranger 550/6 and had a towbar fitted to our 2.4 Estima. We have looked into and studied so much and its all mindblowing! Just a few q's please.

The 7% weight in the nose is very important but without a gauge how can i be sure I am ok. I understand heavy over axles, med both ends and light on top but where in the caravan determins the nose weight exactly, is it in the bonet where gas bottles are kept aswell as the front of the van i.e living area?

Can you put tissue/toilet wipes down the loo? Thelford cassette loo.

I am sure i have more q's but my head hurts atm!

Thank you