I think I'll switch to weekly as well. It's generally better to have more capital in the market sooner. Even if the difference is likely to be very small after X years.
@DerJuwelier Your money enters the market sooner if you invest it all at once once a month—on the first, for example. Otherwise, you’re spreading your savings over four weeks in the current month, so the money would enter the market later. Or am I missing something here?