Organ length sufficient for making love?

Yes! Yes yes yes, oh god, yes! I don't understand why so many men doubt their size! I had a man who was just barely over 4 inches and I got off more than I do now (my current man is actually really large, too large if you ask me). The hard part is that you're actually going to have to try to please her. A woman's vagina is only a couple of inches long anyway, most of us dont enjoy our cervix being poked with a large penis. I can promise you that she can enjoy herself as much as you will. Be confident though, it really does change the way the sex feels.

4 inch is fine as long as it is very hard.

It's not that round, it's actually pretty small