Take James' advice on this just for the sake of getting a good working relationship with a dedicated lighting guy. I have spent years doing all phases of landscape and hardscape work (and I get plenty more opportunities all of the time from my clients who know this and ask me). However, I have a very good referral relationship with a buddy that does that side of things. He sends me his lighting and I send him the landscaping/ hardscaping. It's good symmetry. Trust me, the lighting guys are often the first ones in on many projects for clients who care about the quality of the end product. They can be a great referral asset to you. Cultivate a relationship and watch it grow. Often times for landscapers who dabble in lighting, they are missing great referral opportunities for bigger jobs that could pay out big time. Stick to what you know and are good at- "Don't step over dimes to pick up pennies".