Using PStart & RemoveDrive. Want to stop Dropbox on exit.

tl;dr version: "Is there a way to convince either PStart or RemoveDrive to shut down Dropbox before exiting?"

I know I'm using outdated stuff here, but I'm happy with my setup *waves cane*.

I have multiple portable apps living happily on a 16GB flash drive. I use PStart (version 2.11) to keep everything at my fingertips and RemoveDrive (version 1.9.4.3) to run on exit, so I can kill PStart and stop the drive with one click when I'm ready to move from one computer to another.

I just recently started using DropboxPortableAHK to sync some files between the USB stick and my Dropbox account. It works beautifully, and I have it set to start with PStart and run in the background, but there's the trouble.

I forget I have it going, so when I'm shutting everything down, I don't exit Dropbox, and then RemoveDrive hangs and I am sad.

So, is there a way to convince either PStart or RemoveDrive to shut down Dropbox before exiting?

If not, I just need to train myself to exit two things. Or I have to look at joining the modern world with the PortableApps.com Menu.