Imperial Celebration (A collaboration)

I recently got a new job at Great Lakes Brewing Company. So, I decided it is time to make a massively delicious beer with the help of HBT. (That's where collaboration comes in)

I want to do a parti gyle so that I have an imperial (thinking stout) and then a smaller version. I haven't sat down and formulated a grain bill yet, as I'm still tossing around ideas as to what exactly I want to brew, and I'd like to hear what you all think, ideas, etc.

Initially I'm thinking imperial stout with tons of coffee notes, LOTS of chocolate, dark and rich, a little spice such as ginger or clove, definitely bourbon, perhaps a little lactose for a creamy feel. I'm even considering throwing a small about of figs in there.

Then for the smaller beer I was thinking oatmeal stout.

I'm taking cues from the following threads so far:
https://www.homebrewtalk.com/f76/founders-breakfast-stout-clone-2011-hbt-competition-category-21-winner-239212/
https://www.homebrewtalk.com/f68/russian-imperial-stout-2011-hbt-competition-category-winner-238807/
https://www.homebrewtalk.com/f68/cream-stout-2nd-place-2011-hbt-competition-category-12-13-a-239907/
https://www.homebrewtalk.com/f64/grain-reapers-whiskey-barreled-hopgoblin-267634/#post3240355

I really like azscoob's pumpkin seed idea.
Perhaps use these oak chips to get the bourbon flavor?
http://www.austinhomebrew.com/product_info.php?products_id=13056

I want this beer to be incredibly complex and like nothing I've ever tasted before. I'm not too concerned with throwing too much in the pot because I like overbearing huge flavors with sharp contrast. I'll sit down and do a grain bill when I get some more ideas from you guys.

Opinions?
Cheers

Also- I was thinking about yeast. I want to give it a unique flavor. So no standard stout yeast varieties. Perhaps something trappist?

This recipe also interests me:
https://www.homebrewtalk.com/f12/chocolate-oak-aged-yeti-clone-146843/

This is basically the RIS recipe by marubozo. Tweaked a little. Thoughts?

Recipe Specifications
--------------------------
Batch Size: 5.25 gal
Boil Size: 7.32 gal

Ingredients:
------------

17.00 lb Pale Malt (2 Row) UK Grain
1.50 lb Roasted Barley Grain
1.50 lb Flaked Oats
1.00 lb Crystal Malt (120 L)
1.00 lb Special B Malt Grain
1.00 lb Chocolate Malt Grain
0.50 lb Cara-Pils/Dextrine Grain

4.00 oz Challenger [5.80 %] (60 min)
2.00 oz Goldings, East Kent [7.20 %] (30 min)

I figured add 2 oz of coffee grounds at flameout, along with 6 oz of cocoa powder.
I was also thinking of throwing some figs in for a week or two during the secondary. Perhaps some lactose too?
I also want to age with oak chips soaked in bourbon.

Critique?

Bump