Unfortunately, the battery tests were disappointing, only 33 hours...
assuming that the battery capacity was correct (1000mAh) and that all of it was used before the boost circuit collapsed...
1000mAh @ 3.7V = 3700Wh
3700Wh / 5V = 740mAh
740mAh / 33h = 22mA (AVG) spread across the booster, RTC , Arduino and SD card which isnt too bad really
The SD card will be turned around so that its accessable from the end with the USB port and the wires allowing the whole lot to be put into a tube of heatshrink.