One piece of advice for setting up a lab, a good technician can get a good result using older, second-hand equipment which may not be cutting edge, but a bad technician will never give you a good result. The consideration of 'good' technicians must form part of any business plan, theres no point in setting up a lab, if you don't have the correct resources, and in testing this is definatley where the technician comes first, followed by equipment.
My definition of a good technician is fairly simple, competant, accurate, reliable, honest and trust-worthy, and if their efficient even better. Good technicians are able to learn new tests, so experience in specific fields does not need to be a priority, just an advantage.
As for a 'good' result, this is an accurate reflection of the property measured, which is repeatable and reproducable - not it always passess.
If I was an investor in a lab, I would be concerned about the way in which it would be staffed, who were the potential Clients, and how quickly (realistically) it would be expected to start winning work from them. You can't sell anything if your shelves are empty, and with any business there is a 'critical mass' which needs to be achieved before a profit can be made.
Oh and don't forget to tell the investors what can be typically expected as a good profit from a lab, different industries definatley have different ideas as to what is a succesful business and you can't compare apples with pears.