What are financial projections, and why they are vital ?
An idea is an imagination. A Business Model Canvas is a little detailed imagination. Once you actually document the revenue-expenses on each of the component, it gives you a near-true picture as to where do you stand financially. So you can adjust factors.
How long should one project ?
Minimum 3 years and ideally 5 years. As any business is expected to go through some hi-lows during the period. After this passage, the business owner knows the tricks of the trade. I would recommend to make 5 year projections for 1-gen entrepreneur and 3 year projections for 2nd,3rd gen entrepreneurs.
Standardized Project Reports are useless
There are many available on the internet. However, I would suggest you to get it done from a chartered accountant who will need inputs from you, for your project. There can't be a standard project report for a 2000 LPH plant. True, it can give you a nearby cost, but finally your overheads are different. Other costs like distribution cost, admin expenses will be different in each area.