mayrooni- Before you get the 100 birds, there are questions to answer, and homework to be done. What are your poultry meat needs? How much chicken do you eat in a week, month, year? What are your freezer capacities? Is there sufficient outside space to raise the birds to full term? From my observations, numerous people start with the intention of raising their own meat,only to find out that they are not mentally able to overcome the killing of the birds. Are you able to do that? To process birds by hand without help can be foolhardy (accidents can and do sometimes happen). Using an electric scalder and plucker is a great help, but on the realistic side you will still need 12 to 14 minutes labor time to complete the process for each bird. If you can use an outside processing facility (additional costs) then you have to plan on crates and a truck for transport of live birds, then coolers to transport the final product home. Contact your local county agriculture extension agent for help and local suggestions.
I encourage people to raise and process their own food. We do. For a successful outcome please do your homework before you commit to 100 birds.