Can anyone help me?

I have 11 websites, and have picked 10 ranking keywords for each site that I want to target.

I want to produce a forecast for the 11 websites in an excel doc showing potential keyword improvements 4,6,9,12 months from now.

I need to come up with an excel formula that i can use across each domain and it's keywords to have the same movement.

I also need to create a graph for the each website showing the keyword movements 4,6,9,12 months from now.

Is there any tools available to do this? Or if any SEO is looking for work I can pay for you time but its an urgent task.

Thanks