What do you need more than 4 molex connectors for in the first place?
The reason most power supplies don't come with a ton of them is because most people don't need more than 1 or 2 for fans, so giving you 8 is just a mess of wires for no good reason. You can get Y splitters for molex connectors, or longer strings that turn 1 into 4, its just most people have no use for them. Assuming you aren't using the adapters to cheat and feed an 8 pin PCI-e connector you will be fine