Hey Buddy
If no-one else sees this before the week end...
Can you hang on, I'm working on it now for you but I may get a call-out in the meantime.
But don't worry I'll be back if I do, I won't leave you hanging
It's a little complex to explain without a mission file so I'm checking out a map I made with the things you want to get some images and AI sets together.
The map is actually a DFX2 map "Coffinwood TD" (you can download it here at NHQ) and it will open in JO with waypoints etc intact but it's not exactly ready to go for you just yet if you want a full conversion to work from.
Just to give you food for thought.....
There are several ways to do it but generally we use the "Reset Flags Has Visited" command in the event editor in conjunction with several waypoints and some Waypoint Pausing.
I'll see about your variable timer as well, I'll have to pull that out of my cobwebbed brain again
stomp