Power to the Crunchie Boost

So after much insecurity over whether my design would work I think I now have something that in theory converts a 9V unregulated supply (as provided by the standard Boss PSU) into +8V and -8.5V (see above). The LT1054 is a combined charge-pump converter and regulator to provide the negative supply and the LM2930 is just a regulator for the positive voltage. Both were found after trawling through the RS catalogue for far too long and reading far too many datasheets! The LT1054 is pretty cool though and if it works I'll be impressed - inverting a voltage with essentially some clever switching and a fat capacitor seems like it could be dodgy to me.

Well I've ordered the bits and will test it out soon, so in the meantime I'll pray to the electronics gods.