Arrange command for different elements

I am looking for a solution to an ongoing illustration need I have. I draw diagrams with expanded lines that need to go over some lines and under others. Arrange to front or back only allows me to use a command for the entire line so it will always only be above other lines or below them. If I could give commands of arrange/bring to front with relation to a specific grouping and arrange/bring to back with relation to a different grouping that would be wonderful. Any ideas? The photo I've attached took me 30 minutes to draw and perfect, way too long!