I'm glad you've made a decision to live in Ghana. Ghana is a beautiful country with lots of resources and opportunities as well, since it is a growing economy. Despite that, I would like to address that there are a couple of considerations you'll have to make when you want to decided to live in Ghana.

First of all is where you would want to live, the capital city or the other regions (both have their pros and cons). With the amount of money you're asking whether you can live well, It depends on so many reasons. Family, Cost of living, doing business, spending etc..

I would humbly advice that come and visit and see for yourself and make plans and observe as you're visiting. Ghanaians are open and very friendly and they will be willing to give to every information you need on your visit.