Beautiful images, Jared! Here’s my cheap way to use a single remote flash:
It is a flash cable. Since you already have a camera and a flash that are completely compatible in TTL mode, adding a cable to get the flash away from the camera will give you the same control as the wireless systems. Panasonic says that they make a TTL flash but nobody has them in stock. Panasonic and Olympus flash systems are 100% compatible so I ended up buying another FL-36 for my pocket cam. Ironically, the new version is set up for the Olympus wireless flash system. That doesn’t do me any good buuut there is also an optical slave mode that will work with any camera that has a built in flash, no hot shoe needed. Unfortunately the LX3 has a pre-flash that will trigger the slave and if it is shooting at a high output, the slave will not have any juice left for the actual exposure. So most of my off camera flash usage with the pocket cam involves that cable. Compare the number of contacts on the cable hot shoe vs. the one on the camera. I also had a really hard time locating an off camera flash cable that was compatible with an Olympus/Panasonic flash. It turns out that Canon flashes use one extra contact in the array on their hotshoe. Do yourself a favor and shop for a Canon flash cable, those are muuuch easier to find. Nikon has a slightly different arrangement so that cable and the Canon cable are not interchangeable.
Since you like doing close ups of wildflowers maybe this will give you some ideas of what to do with a portable light source or 2.
This is one of the toads that reside in my yard. You know how hard it is to do macro photography of anything that is 3 dimensional. At close subject to camera distances your depth of field is measured in millimeters, not inches or feet. The easiest way to help stretch out that DOF is to use a small aperture. Unfortunately that requires either a longer shutter speed or more light. You know I hate tripods so my solution was to set up a couple of flashes off camera to make a portrait of our toad. Mr. T. only comes out after dark. He hangs out underneath the porch light because it attracts the bugs that he likes to eat. The lamp has a CFL bulb and the light is weak and of an awful color. All of the light seen here is from my 2 speed lights, one on each side of me. Earlier in this thread I mentioned how you can control the ratio of ambient light to your flash output by varying shutter speed. Mr. Toad’s portrait was done at ISO 400, F/36 @ 1/320. The fast shutter speed prevented any of the porch light from registering in the image. Two flashes had plenty of power to expose properly at such a small aperture, especially since they were only a couple of feet away from him. The inverse square rule of light is normally the enemy of flash photography, but at macro distances you can move the light source close enough to your subject to be effective.
One last photo using off camera flash, also of a subject in his natural habitat. This time it is to overcome a backlight situation:
I’ll bet that turned out much nicer than the photos the creepy taser and gun toting ranger got of you.

hoto: