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You about 40yrs old yeah? If so Max 145 bpm for those runs a good starting, ave should be lower.
I'd bin off Fri & Mon, also forget distances & pace and plan everything around time on feet & intensity.
Gradually increase Sun & Thurs Time on
Feet, Thurs less so though. Keep Sat to 30mins max (duration not intensity!), don't be afraid to shorten. Make Tues something structured not just 5km eyeballs out.Build in cutback weeks.
Still more than I'd plan in as a hobby runner.
Others will offer different thoughts around this, choose what you think is most manageable and motivating.
Intensity - I don't know, this is off the back of a conversation in the pub, I was broadly thinking of keeping to ~145 bpm.
It certainly feels like it'd be easier to start with half those distances, it is true.