Congratulations! That's some great success within one lucid dream
Well I think you already answered the question concerning your job yourself. You are not so happy which is a clear indicator that you might want to change jobs if this oppotunity arises in the future, right? Of course you don't have to, but if there is a chance to get a better job, remember your dream and consider your options carefully.

--> 1 - I never got any predicitions for the future from any DC so I can't help you with that one
--> 2 - generally I'm often freaking out about some minor things that I shouldn't be afraid of... so quite a few DCs in my dreams told me to calm down and just face things without going crazy about them... So I did that and it's true; whenever I encounter a situation in a calm way that's much better and always bring better results with it.