I forgot to mention something else about Poverty.
To embrace voluntary poverty -- material, not just detachment from material things (spirit of poverty) -- in the married state would not be acceptable.
And I know that poverty can bring great happiness -- I enjoyed very much my days at the Seminary, when I didn't have any money, car, job, or anything else but God and the Faith to concern myself with. But I was single then. I didn't have a vocation though, so here I am.
So to use myself as an example, if I were to not save up any extra money, food, etc. to provide for my wife and children, with a desire to be "simple" and "poor", it would be vain and/or imprudent and/or presumptuous.
Remember the example of the hypothetical mother who spends hours each day at Church meditating, to the detriment of her household duties including her children? That mother would be guilty of actual SIN -- for meditating! Because she wouldn't be doing God's will. She would be neglecting her duties of state (her household -- husband, children, and her share of work around the house). God didn't call this mother to be a contemplative, or a religious sister -- he called her to marriage. So she must offer up her own will, and do God's will instead.
Bottom line: Holiness doesn't consist of miracles, or prayers, or fasting, or almsgiving, or voluntary poverty. The essence of holiness is union of your will with God's will, which means doing your duty of state perfectly. Those things can HELP with that end, but they are not an end in themselves. (Of course, everyone's duty of state involves SOME prayer, SOME almsgiving, etc. but that's another story).
So it all comes down to what is God's will for YOU -- doing God's will perfectly is what will get you a high place in heaven, not your bank account balance (whether extremely high, or extremely low).
Matthew