First, take a deep breath! Everything will be OK. As digitalbot mentioned, you phone should be fine.
Some clarification first. You do not use adb to flash a recovery, kernel, or anything else. That's fastboot and you'll be doing that from the bootloader, not while booted in the OS. Fastboot does not work while in the OS, adb does not work while in the bootloader. Since you were able to use rumrunner, adb and fastboot should already be installed on your computer and working. Now, understand that the fast boot that you disabled to use rumrunner is not the same as the fastboot that you use to to communicate between your computer and phone. Similar term, but completely and unrelated things.
Sounds like you are still s-off so no need to use rumrunner again. You mention having a custom recovery. Did you install it? Rumrunner does not install a custom recovery so unless you did, you still have stock recovery. To verify, plug in your phone to your computer and open a command prompt and type "adb reboot recovery." Phone your reboot to recovery. What recovery does it boot? If it's not TWRP or CWM, find a custom recovery in the forum (I use TWRP) and follow the instructions there to flash it to your phone from the bootloader. You'll do that with fastboot not adb.
Now for root, verify that you do not have root. Install a root checker from the playstore and check. If you don't have root, you'll have to flash SuperSU from recovery so go to http://download.chainfire.eu/supersu
and download SuperSU to your phone. Reboot your phone to recovery and install the zip. You should now be rooted, double check with root checker. Now go to the playstore and install SuperSU to stay up to date.
Not sure if I covered all your questions, so post back if you still need clarification. Good luck!