Hard to say at this point to be honest
Probably no more than a dozen different categories, each category would have 2 - 5 different products to choose from. 20-40 different products all together, maybe. Showed my partner WHMCS...and he likes the fact support ticket/billing information is tightly integrated and easily visible on the customer-facing screens.
I really don't see anything I would need to modify...but I do see things I would like to hide/remove simply because I'm not providing any Hosting services.
JT