Massie is correct, these files all seem to sit comfortably inside that artwork file. And for the 35+MB that it is, it holds a good amount of info within it.
And to clarify, I have a 4s running 6.1 (which will become 6.1.2 before they release 6.1.3). I've used winter board many times (great learning tool for understanding theming and the ios file structure) and have nothing against it. I've never found it running slow or having too many conflicts. I also don't change my settings around much. I have the tweaks I use excessively and like, the font that best suits my needs, biteLiquid, and a few others.
I just find that I can copy and entire folder after I've made the changes I like, then when I update or restore, I go back into the device and ensure the hierarchy is the same. If it is, I drop my folders back into place and reboot. Within 30 minutes, I have my phone jail broken, restored from backup, and re-tweaked to my specifications with little to almost no change in available ram or speed of the device. I'd just rather overwrite than piggyback onto items. Thankfully, the images I'm after are only about 90 of that total 1700+ inside that file
Maybe I should consider getting a hobby, eh?