I'm no expert (at all) but I would say the author of that recipe should use recipes from people with more experience for a while until he gets the hang of it. That's that what I'm doing and it's working out great. Still LOTS of room for creativity when using other proven recipes.
You may be no expert, but I'd say you're definitely onto something here.
OP, I mean no offense by this but your recipe looks like a sticky mess. With the amber extract, which has a good amount of caramel/crystal malt in it, there's no need for ~30% caramel malt in the mash. In fact, 15-20% is about the max you ever want to go with caramel type malts. I'd take out at least a pound of the caramel malts, and simplify the base malt. Go American
OR Belgian, not both. Your hops are confusing too, not sure what the point of the fuggles would be in that recipe, the 'c' hops will surely drown them out. And lastly, why secondary that beer at all, much less after only a week in primary? Go 2 weeks primary then onto keg, no need to transfer in between with a beer like that.
Personally, I think you should follow the advice of iambeer, and stick with proven recipes until you have a better grasp of what ingredients do what in beer. It really seems like you're just trying to use up all your leftovers, but not understanding what those ingredients will impart in your brew. If you want to use up some of your stock, I'm sure if you looked through the recipe forums here, you could find a recipe that uses some of your leftovers.