I'm not sure this will be possible without some custom module development... you'll need to hook into the node submit form to add the redirect, and you'll need to have some sort of hidden field or something to keep track of which customization node belongs to which order. Those things are really what our module will facilitate, but in the meantime you can always try patching a few functions together. It'd be quicker for me to do it than to try to explain it at this point.