It is not likely that you will be able to work a 40-hour week schedule. They can be a big help. You should consider what software will help you do. You should also consider how comfortable you are with computers, and your willingness to learn. Do not close the door on any source of financing but do not be disappointed if you are not successful.
Venture capitalists have many applications.
They can be picky and choose only the best. You need enough money to acquire the location and equipment to begin business and enough working capital to keep you going until the business is self-sustaining. The amount varies with each business. When the time comes, you will have plenty of people contacting you. We have never heard of any of our clients get a grant to start a business.