First of all, how money should be spent is NOT a small thing. It is, in fact, one of the most, if not THE most oft-cited reason for relationship failure, even divorce....we get along very well except for disagreements on how money should be spent and couple of other small things...
And worse, from what you say, it sounds like you are doing more than disagreeing how money should be spent, you are essentially living on different sides of the planet on the subject, as well as geographically.
I am sorry to say that my impression is that your boyfriend harbors delusions that you will come and do the bulk of the work of this new job, with more duties and more responsibilities than he feels capable and/or inclined to take on by himself. And that you will do so either in return for room and board, and possibly some sort of token wage.
My impression of you is that you have a much more realistic and healthy idea about the important subjects of Life, Career, and You, and my advice is that you continue in that path, and choose a job that first of all, you will enjoy doing, at a wage that YOU determine will be both in accordance with, or exceed your skills and abilities, as well as your financial needs, both as determined by you.
That job may be in SG, or it may be somewhere else. If it should happen to be in SG, I would strongly recommend that you establish and maintain your own residence and everything else, quite separate from the boyfriend, and permit him to take you out on dates, should he and you both wish to see each other.
If, at some point, he makes the decision to grow up and live in the real world, as you are so commendably doing, then that will be very apparent to you, and you can choose to revisit the question of the relationship, or not, as you choose.
Because by then, it is very probable that you will have met someone who will be better suited to you in terms of maturity, good sense, and feet on the ground, and it is with THAT one that you can both soar into the clouds