Required Microsoft Excel freelancer for Excel S-curve job

I need a model which calculates interest during construction over a period of time, using a cumulative normal distribution. Interest rate is annual, calculated monthly.

Inputs:
-number of months (build duration)
-Interest rate
-different distributions, front load, back load and normal

Output:
-graph
-amount of interest paid
-amount of interest paid as a % of total build
-calculates based on a macro button to prevent circularity once inserted into a larger model

This is a good project, I wish I had the time to build it. I need a quick turnaround too.

Negotiable price. Feel free to suggest additional features.

Skills & Expertise Required

Microsoft Excel