The right board for me?

Ok, max 6"7? So perhaps the 6"5 would be the best compromise, what do you reckon? Thanks for all the help btw

I would go for the 6'7".
The beauty of these boards is that they hold so well, that after you have outgrown the board, if you decide to sell it you can still sell it and a get a good chunk for a new one.
I would play safe cause going too small you could get frustrated. It's all about determination.