I work as an English teacher and my wife is a house wife, and we do have a lot of time to do translation work as my work is not very busy.
I have summer vacation now but will start working again in the beginning of September.
During the vacation now we could work around 40 hours/ week if needed but, from September around 20 hours/ week. We could stretch it to 30 a week occasionally if needed though.
Since we still do not have a lot of experience, we are okay with doing low paid jobs for a starter to gain some experience and references, but not for the long term as we believe in our abilities.