Hi Nerdybaker, and welcome to Cake Central!
I love the 'nerd' angle for your business and can see how you would have no difficulty luring in the gamers and nerds, and building up a reputation as a desirable brand. I'd definitely buy from you, provided there was tasty product behind the name and special effects
I'm not 100% clear on what and how you hope to sell in your business. Based on my business experience, with your business name etc I suspect you will be getting tons of requests for known gaming, sci-fi and other nerdy -themed cakes. Some will be simple, but if you want the big bucks, you are going to be called upon to make extravagant cakes. There are pros and cons to this situation...
1. You are familiar with what makes nerds happy, and with the brands and images people will be asking for.
2. You have some familiarity clearly in electrical and mechanical design (based in how you want to set up your shop), which may be useful in animating or lighting up theme cakes.
3. You have commercial bakery experience.
1. Copyright - already discussed above, but I see this as what will be your biggest hurdle in developing your business to where you want it to be. Clients will be attracted to your business by the name and the inferred idea of getting 3D and character cakes made in their favourite nerd icon. You will be limited in design (legally) without permission from the IP owner in what you can design. You may be saying you don't want to make a life sized "engineer" from the movie Prometheus, but this is the sort of thing that people will ask you for (I make wedding cakes predominantly, but I get asked to make copyrighted character/3D cakes ALL the time! And while I'd love to do them, I have to say no because I don't want to cross that line). There are only so many primary coloured tiered cakes you will want to be sticking cheap plastic Mario figurines into. Otherwise, what makes you different to every other pink frilly bakery out there?
2. (Related) Ability in making 3D/carved big cakes...without this skill set, you are going to be limited in what you can do. Maybe before you bail out on your current job, see if they can help you pay for some classes in making sculpted and 3D cakes? There are also some good beginners online classes that can give you enough know how to start experimenting at home on your own dollar.
3. Set up cost - at the risk of sounding like a boring drone, you need an evolving business plan, that will help you plan how to make your cottage bakery start into the 'lights and whistles' extravaganza you are envisaging right now. Right now, as you think about maybe starting down the CFL path first, what will be the factor(s) that keep your customers returning? What are you going to sell? How are you going to stand out in a saturated market? The name and angle are a great start, but will this be enough to get a loyal customer base? Remember, you're not going to be needing the pyrotechnics in a home bakery (depending on your local county you may even have strict signage and noise restrictions).
I'd like to know more about what you want to sell...as in are you baking from scratch, will you be using any unique ingredients, and so forth. How will "Nerdybaker" be evident in every item you sell?
As I said, I love the nerdy cake idea, and I see LOTS of interest being generated by the name. With a lot of passion and the right plan, you will go a long way