It is all good with the 747's still flying, as long as these companies are willing to pay for your rating.
There is a lot of F/E's on the market looking for work. I believe it will be better to use the money and start your pilots lisence or getting a new generation aircraft rating on your AME.
Unfortunately the F/E position is dying out quickly.
I see you are from JNB, maybe it will also be good to get your A&P lisence. Will be better for private flying as a flying tech.
Good luck, hope you can get into the air quickly.
I will never trade flying for work.......