Sorry, but personally, I disagree with Dan's approach; way too many segments for just one long loop. I would just treat each loop as a separate operation by cutting the rising segment just past the yellow switch where the rise starts and then add another cut at the green switch where the rise meets the upper level loop. Now, your 2 loops can be run independently, as can the rising segment. For any sidings you want to be able to shut down, just cut that track right after the switch. (For track planning purposes, you might add a double-ended siding along the rising segment so trains can go up or down at the same time.)
In his green loop suggestions, Dan seems to be putting cuts into the reversing loops like formerly needed in 2-rail DC powering (exclusive of DCC or other newer innovations). Those are not needed in 3-rail operation.
If you're worried that the loops are still too "big," just add more power feeds around each loop off of the same TIU power for that loop.