Prihan look first of all you need to learn Romanian language at least in your first year coz being able to speak Romanian will help you so much to find a good job but to be quite honest with you the salaries there is not so good like in U.K. For example
I think you will start with 700 euro maybe less not more it just depends on which field you will work
Bucharest is quite expensive than the rest of Romania so to rent there one bedroom flat will cost you around 300 euro depends on the area
And your monthly meals will cost around 140 to 175 euro pp also depends on what you eat your can cut a lot of things
God be with you but think twice before you start a career there