C.G.
There are risks of course, but it is a much simpler and safer alternative than having your tubes tied.
The only advice I would give is that if you really think you would love to have more children but money is standing in the way, I would wait. You don't know what the future holds money-wise and it would be a shame to have the vas and decided later that you can afford more children.
There are some long term options like IUDs that you could consider until you are truly sure that you don't want any more kids. Good luck with whatever you decide.