I think you're getting hung up on `optimal results'. there is no real way to know what those are for you unless you try taking different dosages and then adjust up or down based on how things are affecting you. that said, I have read stuff by john beradi explaining his diet and he eats almost all omega-3s and very few omega-6's, so there is really no harm in cutting out most omega-6's and just eating wild caught fatty fish, flax, eggs, etc as opposed to beef and milk (which have omega-6's in higher ratio).
also note that olive oil, while incredibly good for you, does not contain many omega-3's, it's mostly omega-6s. with salmon, you need to be very careful; farm-raised salmon is grain fed and as a result is high in omega-6's and not as healthy for you as wild caught, which is high in omega-3's and extremely low in omega-6's.
http://www.nutritiondata.com/ has breakdowns of fatty acids contained in every food. these can be helpful.
again, the bottom line is eat as many omega-3's as you you can afford in a combination of both normal foods and supplementation.
here are john beradi's articles: read several, they're all worth your time.
http://www.johnberardi.com/articles/nutrition/index.htmas a side note, you're on a keto diet recommending .5g of fat per lb of body fat? how much of a caloric deficit are you in? any keto diet I've ever seen has been between 60/40 and 70/30 caloric ratios respectively between fats and proteins. if I were taking in only 90g of fat a day on a keto diet with the rest filled with protein (60/40 ratio), I would be consuming only 1350 calories a day. that seems dangerously low.