I can afford to lose as lite as 0.001 btc, per week and not more than that.
Good thing that you have only small amount and that is very affordable to lose in gambling. Hope that many people is like you.
And you are not that too addicted to gambling.
it is good that he already have limit on how much he can spent. if you go in thinking you can control yourself, you may end up losing more than you expected.