Basically I've done some of this already. I AM somewhat established in my area, and I do get some clients via word of mouth. My main concern would be to get a loan for new equipment, and the proper permits/licenses and most importantly INSURANCE.
As for equipment, the D50 isnt the BEST camera in the world but I love the damn thing. I would probably get a second body, even something like a D70s that I can use a Sb-800 in Commander mode on would work great, because then I would only need a SB-600 and stand to have a nice little wireless setup.
What am I forgetting?
The MOST important... a business plan. Without it, your chances of getting a loan are slim to none.
Also, not sure how you are thinking about working, but a successful BUSINESS will have very little to do with photography in the end. Its more like a 80% marketing/accounting/managing vs 20% taking pictures thing.
I suggest that you talk to someone that understands how to run a business successfully, take a course or at the very least purchase a book.
Before opening the business, consider having:
- a business plan (obviously... the basic difference between a survivor and a "succeeder", IMHO)
- a web site
- a blog
- incorporation (better losing the business than your home in an emergency!)
- business insurance
- business cards (which opens up a whole can of worms... its called BRANDING yourself and your business... logo? company direction? refer to business plan!)
- yes, you will need better equipment than you have now if you want to a chance to compete against your competition. A D50 is not going to cut it.
- and on and on and on... all just the BASICS of getting the ball rolling. Other important factors are commitment and the balls to devote yourself to this 100%.
Taking pics is easy... running a business into the ground is easy... making money consistently and growing your business is a whole other ball of wax.
You have an 80% chance of closing the business within a year. You have a 90% chance of closing the business within 2-3 years. If you make it past 5 years, and are still in it... your chances fall to 50%. Knowing where you are going AND HOW TO GET THERE is the biggest difference between success... and failure.
Very few people here have a real good idea about the differences between photography as a hobby and photography as a JOB. Its so far apart, its not even funny. Factors to consider are your ability to take CALCULATED risks, how to leverage yourself and your skills and what would it take to make you stand out in your chosen field. The more unique and individual you are, the better the chances you will make it. Anyone with $750 can get a dSLR and press away... YOU need to concentrate on doing it better, faster, more unique and making sure that EVERYONE knows who you are and how good you are... thats part of the secret to success. Unfortunately, I would need to write a book for the rest, but ny fingers hurt and I am late for work.