I understand what you’re saying. That’s why I said find a woman committed to serving God in her marriage because the Bible also says in 1 Corinthians 7:
4The wife does not have authority over her own body, but the husband does; and in the same way, the husband does not have authority over his own body, but the wife does.
5You must not deprive each other, except by mutual consent for a limited time, to leave yourselves free for prayer, and to come together again afterwards; otherwise Satan may take advantage of any lack of self-control to put you to the test.
As for “experimentation,” I think that this only becomes an issue when a man has not kept himself pure. If he has never seen porn, he wouldn’t be so concerned with it. Not that its wrong to experiment within reason in your marriage.
Another thing to consider: the only licit means for postponing pregnancy is use of NFP, which means abstaining for periods of time. You should be prepared to deal with periods of abstinence in your marriage, if not for financial maybe health reasons. In the past, before the advent of NFP, the only licit means of avoiding pregnancy was complete abstinence. There are some couples who practice this today because pregnancy would be so life-threatening to the woman, that they cannot even take the 1% chance that NFP has.