1st All-Grain: "Peculiar Irish American" questions?

Howdy y'all,

This is my first post here - just registered, but I've been lurking for a few weeks.

I brewed my first all-grain this past SuperBowl Sunday, and have a couple of questions I'm hoping you can help with.

So, my efficiency was pretty poor, ~62%. I think I added way too much H2O at strike, and then couldn't add enough at sparge.

It's now in the fermenter still at a steady burp/1sec. I'd say reached high-krausen on Tuesday.

It's a dry Irish Stout recipe using Wyeast 1084 Irish Ale yeast.

Also, got a wild hair and added 1oz of Cascade at 15min for aroma. I know, I'm a new all-grain brewer (old-hat extract, though), and should be brewing to style at this stage, but I couldn't help it...

So, here are my questions:

Would it be crazy to add some treacle at secondary to bring the ABV up?

Would Cascade, Maris Otter, Black Patent, Flaked Oats, Wyeast 1084, and treacle mesh? ie: a "Peculiar Irish American"? (peculiar = treacle, Irish = Irish stout, American = cascade).

If so, how much treacle should I add? I was thinking ~1/2 cup.


Any other ideas?

Thanks for any advice!