Right now, I have a cron job set to run on Monday and Friday nights, is this too frequent?

Only you can answer this. How many days of data are you prepared to lose? What are the downsides of running your backup scripts more frequently?

https://en.wikipedia.org/wiki/Category:Roman_emperors_murdered_by_the_Praetorian_Guard

‘The Hague Invasion Act’

It’s open source, so you could just go find that answer in the code, right?

Also, now I think of it, couldn’t you just do this with one account?

I don’t mean to ruin the fun or anything 😆