Two opportunities but two different subjects that require extreme consideration and thinking. Here are my opinions on having a stable job vis-a-vis focusing into cryptocurrency:

STABLE JOB

• Having a stable job makes you financially settled as you receive monthly wages;
• There is consistent pay and you have the option to be promoted;
• It enhances your knowledge in the workplace and you learn different techniques and skills along the workplace; and
• You develop friendship and connections along the way due to the diverse culture you take part in.

CRYPTOCURRENCY

• The income that you receive can skyrocket depending on the amount of money you risk;
• You control your time and work. You have the prerogative to control your lifestyle without anyone dictating you what to do;
• You are in your dwelling, resulting to a more comfortable workplace; and
• You get to know by experience the tricks and trades of trading/investing.

The problem with focusing into cryptocurrency is that, you are dealing with risk. Let us say that you invest/trade an amount of $1,000 and the prices of bitcoin suddenly decreased. Now, you just lost $1,000 or at least most of its value. The income that you receive in bitcoin is not stable as its volatile nature explains why. You may consider it as a 'high-risk, high-reward' kind of payment.
With the job offering overseas, you get to be separated with your family and relatives and you have to continuously grind in the workplace in order to at least get promoted. You have to follow the company policies and observe stern rules and regulations.

Personally, I would choose to go overseas and focus on my investments at the same time. It is like killing two birds in one stone!