we are 2 developers that have been working for a consultancy doing a mobile app for about a year, now we are ending our contracts. The enterprise that has contracted our actual/anterior employer-consultancy is asking us to develop 2 "simple" modules in about 2-3 moths and a more complicated module in about 4-6 months but with our own company. The total time is 6 months so we need to do work in parallel.
The first two modules are somewhat easy (they will require 3-4 person per project and two months of work) they are more like web apps, but with the third we will need to investigate more because we don't know exactly how to do it (it will require like 4-6 employees and about 6 months).
We don't know how to put a price for our modules (how much profit do we estimate roughly? we can stimate a little how much time/effort/price will take our employees), even we don't know how many they will cost, for the moment we don't have clear requirements and more for the 3rd module/project.
So the general questions arise:
So basically you have a project which consists in 3 modules and you have some estimates of the amount of work for each.
I will answer the questions in a different order: