Please take the advice of daifly and others. From someone who has spent a lifetime in aviation, I can confirm that the costs involved are huge and are not viable for the operation of one four seat piston aircraft. Pre JAR OPS/EASA it was a different matter!
When you gain your CPL you will be just starting your apprenticeship and it would be wise to gain valuable experience with an established air taxi operator, more importantly in a two crew environment where you can safely gain valuable knowledge from your captain.
Good luck!
