Costing

I've done most of my Recce report and finished my risk assesment
All thats really left to do for it is the research for how much things cost.
I have looked at websites and found the ones that I need all I need to do now is look through what I have found and make it into a report.
I did start this in Excel and I have cost up the cost of programs and I still need to do the people to hire and finally will be the equipment, I haven't worked out though if i'm going to include the cost of getting PC's and how many I would need.
I'm either having my own business with a small office (about 5 PC's) and whether I already own these... or not. And then the cost of having 4 permanent people and if i need it getting some freelancers that would have to work on there own system because I don't have enough.
Yeah so theres still alot left to do and there is a lot of cost.