Do not, I repeat do no use any sort of tropical pressure scale to estimate wind of high latitude, post tropical systems. Pressures are lower up north and lower pressures in these regions will not be associated to winds the same way they are for storms that are purely tropical in nature and in lower latitudes. I’m not saying a Cat 1 is off the table but some models have been showing pressures as low as the 950’s and 960’s near any landfall and wind will certainly be nowhere near those levels