Vref+10 seems very sensible.
Remember that in gusty conditions the wind direction can swing as well as change strength, thus although the additive helps with the gust (control / stall margin) it could contribute to a higher GS if there is a tailwind component at touchdown; don’t forget to check the landing distance calculations for the worst case. 15 deg direction change at max gust?
dhardesthard don’t give the problem to automation; at best it might only give an out of date answer – what the wind was or averaged. Automation doesn’t think, pilots can and must think about the problem (threats) and consider a range of outcomes – think ahead.