Ohhhhh, doh ok i get it now. I even read the words 'array' when you explained the first time, but it didn't quite register with me. I've just realised now, looking at the 5e array that yours is superior. Well, the low charisma thing, I may just have to roleplay through background traits, bonds, ideals and flaws anyway. "Slow to trust" will be one of them.
Though I could lower intelligence to 10 to use the point-buy, i kind of need for her to be slightly more intelligent than average given her ability with tools etc. At the same time... I can't bring myself to lower my combat stats, so if it's ok with you, i'll go with the standard array. Str 15 (16) Dex 13 (14) Con 14 Int 12 Wis 11 Cha 10.