Calum
A higher percentage of accidents can happen in the home, so try getting out a bit more, having five changes at once you'd need to be a contortionist instead of an octopus!
I am limiting myself to one C6th neck on my guitar, the amount of different chord progressions and where to get them is giving me headaches, that's on a total of 8 strings, you have 12 with too many bits of aluminium attached to count on one hand, so get a calculator and figure out all the permutations you can acquire before adding any more to the equation.
You are on a quest that will never stop and apart from yourself, the only other " inventor " I know of is a Mr Wallace, but he managed to get out of the house more when he walked his dog called Grommet, again think of the bother he got into!
Sorry I can't add anything more sensible to this post or nominate you for an award, but I don't play pedal steel, so I'm in the wrong league and sticking to basics.
Robert