Well, I've saved up enough and now have every body and head I wanted, so just the clothes are left (and a wig, potentially two, and a fair bit of styling). I have scary photo of every blank doll I currently own sitting on my shelf, but I'm not going to attach it, because it's just very scary, and you will be scared if you see it. But please understand, as you imagine this scary photo in your head and get scared anyway, that I'm not in financial ruin or anything, because I make good use of second-hand markets, and coupons and whatever.
That readymade wig I ordered really was the wrong size, and even though it's my fault for not knowing measurement conventions, the vendor gave me back the money and didn't request the product back (not worth the shipping costs, presumably), so I have a random oversized wig now. I've looked into resizing it myself and also asked some professional doll customizers if they could do it as a commission, and every source and every person pretty much says that it's possible, but hardly worth the trouble, especially on such a small scale, so it's easier to just get/make a new wig. I might still resize it, though, or at least try. Maybe it could be... Educational.
A friend also mentioned to me recently that doll hair can be dyed with dry pastels - actually quite useful information! She has dry pastels, so I'll probably borrow them when I get to it. It seems like a great way to get the Hourai Shoujos' exact hair shades, and to also add a bit of depth with shading and accents. Hopefully it won't get too dirty, but cleaning it can't be too hard. In a similar vein, I recently saw a short video on mixing hair colours when making a wig - also quite useful for future projects. It seems quite simple, too - the hair is just twisted together and brushed until the colour begins to look uniform, a bit like dithering in digital images. Probably more difficult than the editing made it look, but still quite simple, as far as doll hair manipulations go.
I also replaced Zun005.jpg's head... Because that head was actually more red than blonde, and upon comparing it to a strawberry-blonde head originally meant for Zun008, I switched them. Makes you wonder where the dolls' individualities are really stored! My answer to that is... In the noosphere?
Here she is, I like this pic. The new hair seems more fitting. (But I screwed up her bangs - but it's not very visible.)