Charlie is the man for ss stuff,plus if you can get to his “shop” (looks more like a front room full of bikes and stuff) you can talk for hours, end up persuading the OH that another bike Is a good idea and get a recomendation for lunch in the town! as for the bike conversion, Play around with it and find what you are happy with. Then after you find you really like ss, get ss specific frame or a frame with an eccentric bb which can be run both geared and ss.