Your black leather sporran is fine for now. I'm going through sort of the same thing. If I were you I would go for a waistcoat/vest and a jacket. Here and there accumulate some accessories and then focus on another kilt f you like. You have most of what you need so finish off the out fit. You should build a ragweed outfit and another style with the same kilt. I am not huge into super casual kilting so I am building a casual daywear outfit then my pipe band uniform then lastly my formal attire. And I'll go from there and follow where wind blows my kilt