I finally got the last of the parts I needed a few days ago. Ironically, it was about the most important part, the SD card reader/RTC board. Ironically I'm not going to go too far too fast at this point of development because of two tiny problems:

• My partner took all the computer mice with her on vacation, and I'm too lazy to move the wireless keyboard and mouse to my programming computer across the room. That's okay, she has a warrantee replacement wireless one coming anytime that I'll conscript on her =P
• When I ordered the DuPont lead connectors, I didn't count on how much of a pain it is to crimp them for prototyping. I can do it, but it looks incredibly dirty. A set of male-female breadboard jumper wires will actually do wonderfully for it, and the set I got off of Amazon should arrive on the 24th and comes with a mini breadboard! Yay for streamlining power and ground rails for the moisture sensors

So far, everything with status lights does power up, but I haven't been able to start testing serial commands to make sure that that's all working properly. Hopefully soon I'll make progress there though.

All of the boards and parts (that rats nest in the corner is my jury-rig of the wires connecting the moisture sensors to power, ground and their analog inputs)

From top, clockwise: 4 channel relay board, generic R3 UNO, an ESP-8266 sitting in a right angle connector, and the SD card/RTC shield. The 128 MB card that's currently in it is going to be insane overkill for a lot of the development cycle of this system.