Wool is easy!
Yes, they are pricey, but if you get two very large ones, you're done.
They need soaking in lanolin overnight - you do it the first time you get them, then once a week for the next couple of weeks (they need about 3 coats to start with).
You don't need to wash them after every use. Something about the lanolin & wee makes it mix together to form a wash and it sort of self cleanses. Just air during the day and they are fine for the next night. They only need washing if there is poo, or if they start to retain a wee smell after being aired for the day (once every couple of weeks here). They need relanolising then after about a month (from the last of the 3 initial ones if that makes sense?!).
If he doesn't normally poo in a night nappy then you will only need to wash when they smell (hurrah!) - most are fine on a wool cycle in the machine. I put mine in with a squirt of baby shampoo in one of the machine liquid ball things.
Lanolin - you can either soak them with solid lanolin (you need to melt the lanolin with some hot water & shampoo, then put in a bucket with enough cool (30c) water to cover them). OR you can buy wool cure - costs more but you just pour it into lukewarm water and you're done.
I love wool Less washing than normal wraps, much more breathable, and nappies are far less stinky in the morning.
The wool works by absorbing the wee and then letting it evaporate out over time - tis good stuff