Order
Once you put a ward in place, shouldn't it stay in place unless broken through? Yes, it may be a pain in the arse the first time to cover everyone currently there, but you could ask for help. I'd be willing to help. And if others arrive at the safehouse, then you're only adjusting the wards to include them, not everyone all over again. And again, you can teach others that you trust to help so if you're not there to do it yourself, someone else is.
You could additionally create a blanket ward for when you're lacking time, but then when you have that time, switch it over to the more specialized ones to narrow the chances of someone breaking through them. It would provide extra protection, if nothing else.