you could do 3 4 seg trips....4 day 1 + 2 of 4, ron, rest of it day 2....what you need is places where only to & back flights are done to get to 3 legs....tyler tx, lubbock, abiline, & perhaps some in ca....also, you could use multi city....

i don't know of an online program to use, other than brute force on aa....

i'm intriqued with the problem....good luck...