7.04 would be better due better drivers and HW detection. All so that 7.04 would
be idea , because the end use cannot up upgrade from Dapper 6.06 to Edgy 7.04
will out doing a full new install. Mainly the Ubie people are saying for LTS.
That they will not turn off the back ports for several years. Yiu cannot charge
for Ubuntu on a computer. It is free and charging for it may get you in trouble.
Yet, you can give a fee for installing it, because time is money.