i like parking lot sprints, i only do them 1 day a week right now
i always treat cardio as a means of increasing cardiovascular health as opposed to deepening calorie deficit just to get that out of the way
ive seen your pics and imo if it was me, id do LISS on the Wednesday break between Power and Hypertrophy days, and then HIIT on the Saturday break between Hypertrophy and Power(next week) days
for me thats Tuesdays(LISS) and Saturday(HIIT) the reason for this is mainly cause i cant fukks with sprinting after heavy squat/dead days whereas after hypertrophy im not nearly as fatigued, i only do sprints right now(i race my ghanian friend who is about 130lbs and fast as fukk) in our parking lot here for roughly 40m, between 5-10 sprints depending on how we feeling with alot of dynamic stretching at the beginning and ends of each run. We do a lap around the complex prior to starting running
you should look at cardio imo as a performance booster IE getting the most real world speed/power out of your leg muscles(ONCE AGAIN THIS IS JUST AN OPINION not necessarily fact)
it needs to be said for the goal of aesthetics if you have such and such amounts of energy day to day you should use it on lifting as opposed to cardio. on non lifting days if that energy is still there i dont see why cardio is a problem

cause ill be real even after getting accustomed to PHAT running is the last thing i would want to do after heavy squat