My page on breadboard Arduinos may help:
http://www.gammon.com.au/forum/?id=11637
I used SPI (ICSP) to upload the sketch on a breadboard, and when it did what I wanted, I just removed the chip and soldered it in "dead bug" style. I chopped off the other legs (perhaps foolishly) on the socket, so reprogramming it will be a bit of a pain, as it is in upside down.
If I get desperate (eg. to change the interval to 3 seconds) I can always either solder on extra wires for programming onto those stubs, or unsolder the battery wires, get at the chip, reprogram it, and put everything back.