Love that Scott is able to give amazing suggestions on training to run a mile PR 😄.
I don’t have an answer to the questions, other than I’d recommend cutting the strength work down to 1 per week to maintain what you’ve built, and to add one week every 4 weeks where you take it down a notch on the intensity/overall volume to recover a bit (obviously do this also on race week). This is coming from someone with absolutely no qualifications (other than ONCE having run a 4:57 mile). Scott talks about doing a maintenance work out in TFTNA, but obviously in very different context/goals.