2 slap pacts are almost always best unless you make a starter.
As for your beer. Could be your water. My brews always came out sweet and then I see my water has 196 ppm sodium which make beer sweeter.
Or what was your FG. I assume since your did not mention it you did not take a gravity reading?
Kind of a weird recipe. British LME and American hops.
Grinders Island Brewery - Pipeline
Bottled! Award winning East India Porter, Oatmeal Stout, Milk Stout, Saison fermenting at a nice controlled 85 degrees (up from 70) as it should be - weird isn't it.