Input needed - Old Ale tastes off/harsh?

[Terps]

Hey all, just looking to get some input on my most recent brew. This is my third AG and I felt like everything went much better than the first two now that I have the equipment figured out a bit better. The only problem is that the current product tastes nothing like I expected. It is very bitter and almost offensively earthy - much more than I expected from it. It was in primary for almost the entire last month and was recently moved to secondary. The only thing odd that I have noticed is with the continued settling in the secondary I have two layers on the bottom - the normal yeasty light brown mess and a darker gray/green on top of that - something I haven't noticed in other brews in secondary. Current plan is to age it as long as I can and/or eventually age it with some bourbon cubes + vanilla bean. That being said, here's the recipe:

Abomination

Batch size: 5.5 gal
Boil volume: 6.0 gal
OG: 1.083
FG: 1.021
Bitterness (IBU): 36.4
Color (SRM): 19.3
ABV: 8.2%

[Grains]
Maris Otter Malt 6.000lb Grain 36.9%
Vienna (US) 4.000lb Grain 24.6%
Biscuit (Belgian) 2.000lb Grain 12.3%
Candi Sugar, Clear (Belgian) 2.000lb Sugar 12.3%
Crystal 20L 2.000lb Grain 12.3%
Chocolate Wheat Malt 0.250lb Grain 1.5%

[Hops]
Northern Brewer 1.50oz 8.0% AA Pellet @ 60 min, 29.7 IBU
Cascade 1.00oz 5.5% AA Pellet @ 15 min, 6.8 IBU
Cascade 1.00oz 5.5% AA Pellet @ 0 min, 0.0 IBU

[Yeast/Other]
Scottish Ale yeast 1.0 unit(s), Yeast Edinburgh white labs

[Batch Notes]
Mash 1hr 155deg 4.8gal, sparge 3gal 190deg, 6gal boil o.g. 1.080. 11-6-11.

Again, just looking for input as I don't know if this is what to expect from this brew or not. Thanks!

 

[Dynachrome]

The bigger the beer, the longer the bottle conditioning. Apparently you haven't bottled yet?

Gotta relax and wait man. Your grain bill looks like a lot for the yeasties to digest too.

 

[Terps]

It is going to be kegged. I'm willing to wait as long as I have to, it is just nowhere near where I though the taste should be but it doesn't taste terrible. Just not familiar with the yeast and some of the grain used so I'm just checking.

 

[pdxal]

To me, Vienna in larger quantities can sometimes taste fairly earthy/nasty/tannic. Also not a huge fan of Northern Brewer in large amounts, but the Cascade should cover it up well.
Other than that, you need a lot more aging with that beer.

 

[Terps]

Thanks for the input guys, sounds like I just need to sit on this one for a while which is what I kind of expected.