Using cloth is a bit of a learning curve. It will get easier, promise. By the sounds of it, you don't have a massive wetter so that's a good thing.
The red marks - we found we got red marks because the binding on the wrap legs got wet rather than the wrap being too tight. The bindings are not waterproof so changing the wrap with every nappy change might help. Failing that, wool is a really really fab alternative. It is soft, breathable, allows your nappy to aborb more & your baby doesn't crinkle when you hold them
Also, I think buying some little lamb bamboo booster would really help you. They are very absorbant & cheaper than changing all your nappies. They can be put in your sandy's & in the bambooty night (an easy peasy hemp in this too will really boost the absorbancy).
If you are washing everyday, you don't have enough nappies hun & you are making it difficult for yourself. An extra 5 or 6 nappies would make a huge difference.