Making a mini mal bit more progressive

If I was getting an 8ft minimal shaped for me as an all round do everything board, how could I get it made slightly more progressive whilst still keeping it very stable, forgiving and beginner friendly. I need a board that I can grow with and can't afford another!
Interested to hear about rails, concaves or v and why vs tend to be on minimals rather than concave etc. Also, should it be thruster or 2 +1?
(The 8ft is right for my size and experience.)
Interested to hear about rails, concaves or v and why vs tend to be on minimals rather than concave etc. Also, should it be thruster or 2 +1?
(The 8ft is right for my size and experience.)