Bills...is there a way to pay them automatically?

I don't like using that LTW. Money is too easy for my Sims to get already :P I've even increased the size of bills before with Twallan's mods.

You should get a notification in the top right corner on day three of the bills, which will have a button to pay them. I usually wait for that because it takes the money from your funds directly, the Sim doesn't have to do anything.