Do you have any idea of labour time
Is your goal a proof of concept or a reliable device. The first can be build in a week or 2 (if materials are available) by someone familiar with techniques, making it reliable, tested and/or presentable to investors multiply that by 5.
PS. I did not include Hofstadter's law
and costs associated to it.
2 full time weeks to prototype x freelance hour price = ~5000E excl. travel costs etc. 10 weeks ~20KE (free lance prices drop a bit for longer periods).
[ok, there are many people - who want to do it for less]
Are you interested in taking this further?
dont know, What is the time schedule?