Thanks Guys.
Yes, I agree about the unit sizes. I like chunky units, hence the mainly 32s and 36s, but General d'Armee isn't dogmatic about this. They also use small, standard and large units, but that can mean what the player wants - 12/16/24 or 24/36/48, up to you really. Black Powder do give a quick game but lack period flavour for me (and we have used them quite a bit for various periods). Anyway, good luck with the build up - we all need it with Napoleonics - it is NEVER ENDING!!!