I am facing WEP as well, here is my thinking on it.
My non-SS pension is small, and my SS will be about $1,250 roughly , so based on that.
I am delaying SS to age 70, so it will grow, and taking the non-SS pension immediately (at reduced amount).
The idea being, I get 10 years of the non-SS pension, and then when I get SS, it gets reduced, but the amount it is reduced is reduced since my non-SS pension is about 25% lower than if I had waited.
I did run the numbers and this works out to the highest amount, unless I live to 90. Depending upon your pension amounts it could work out different for you.
I compared various scenarios and I used a 50% cut due to WEP (50% of non-SS amount).
take non-SS early, take SS at FRA.
take non-SS early, take SS at 70
take non-ss at 65, take SS at FRA
take non-ss at 65, take SS at 70
take non-ss at 70, take SS at 70 -> gave me the most if I live to 90.
I'd be interested if others have done this calculation and what they decided, as I have not pulled the cord yet.