You don't need lights to step up another level...Being a good photographer is knowing how to use what you have.

Learn how to use natural lighting... It might not seem as professional as using lights but its all about using what you have...I've noticed in some photos on this forum just because you have it doesn't mean you need to use it.

I'd say when you get a job that asks for lights, if the budget is able to pay for the gear then go for it.

I've bought two 1.2K HMI's that way...