Jalilah seemed to have problems with fitting the depletion workout in with BFL lifting.

Are you going to carb load for one day or two?

If only one day then Friday would be the best day. On weeks when friday is upper body you would have to add in lower body exercises then the following week add in upper body. You need to exercies your entire body prior to carb load.

If you plan to do two day carb load you coudl do it friday but i dont know how the spinning class would affect it. Another option is to do a full body circuit workout after the spinning class then carb load until sunday night.

good luck figuring it out.