Happy wife, happy life...:-) so I am a similar weight and had some basic windsurfing foiling skills, when I learnt Wingfoiling - you will end up on the Sky Wing 5'4" pretty soon anyway, most kiters can adapt to smaller boards very easily - so perhaps a lesson or rental of a bigger board until the 5'4" arrives, but I would not buy bigger for the longer term - absolute beginner, yes better on slightly bigger, but also they would need to change sooner or later. Good luck, enjoy the winging, just back from 4 fun days at Lake Garda, full power!