Let me get this straight, you want your first bike build to be something you can't legally ride for at least 4 years? "so its the best to buy a bike strip it down and make it work the best it possibly can? so tune it and clean everything and make it work smoothly before making any alterations to aesthetic" , that
's the mistake most noobs make, buy a running bike, strip it down to the frame so they can paint it and they end up with a bunch of parts in a box to sell on CL. Don't strip it down. Ride it for a year making improvements to what ever the bike tells you it needs. Riding it will tell you what you want to change. Once it is all sorted it is at that time you want to strip it all down and make it pretty before final assembly and riding it for years of enjoyment.
's the mistake most noobs make, buy a running bike, strip it down to the frame so they can paint it and they end up with a bunch of parts in a box to sell on CL. Don't strip it down. Ride it for a year making improvements to what ever the bike tells you it needs. Riding it will tell you what you want to change. Once it is all sorted it is at that time you want to strip it all down and make it pretty before final assembly and riding it for years of enjoyment.