Thanks Simon, soon after posting my last I had a rummage around through the screws within the kit and offered up the pickup surround screws to the pickup tabs which slide right through. They may just about be long enough to use and still get the height needed, but if not I may have to explore other avenues as you stated.
I've seen a few people use old flip flops cut up to use as backing under their pickups. To save buying any more materials for such a small job, and funnily enough i've got some flip flops that won't be missed, i'll give this method a go and see how it pans out.

Chaosblade - Funnily enough I was checking your build out as I started mine and have been checking back for updates! Wouldn't mind a 6 string of my own to pair with but I'll just stick with what I've got for now to keep the mrs on my side
The oil i've got on order is the Crimson Guitars penetrative guitar finishing oil. Theres some good demo videos on their Youtube of how they use it. It may pull some stain out in the first few applications i'm led to believe, but I'm not aware of any colour changes as such.
As soon as it arrives within the next few days I will start oiling and put up a post if it changes colour.