So far, I've been loving it.

So I added more stochasticism.

Every morning I cycle 20 minutes. On head days, I do a 30 minute afternoon cycle. That's 140 minutes baseline plus, on average, another 105 minutes of cardio each week. Maximum: 350 minutes.

Which is smack dab in the suggested range for maximum cardio benefit (140 is the accepted minimum, 450 is the accepted point where diminishing marginal returns from cardio kick in)