If it were up to me, I would tell the woman I was interested in how often I think about her, how much I hope I can be useful to her, how much I love spending what time I get too spend with her, and how much I want to help her get to whereever it is she's going.
Of course, few people can tolerate (let alone desire) this sort of emotional intensity before a relationship has even begun! I imagine 99.99% of women would be overwhelmed if I dropped that much in their lap all at once.
Which is why....I do it slowly, and carefully. Socially speaking, men generally are expected to express affection in the form of gifts, carefully-worded statements, acts of kindness or charity, and simple physical gestures of affection in the early stages of a relationship. Since that's how it's expected to be, I follow those rules very careful but I also add my own twists to each of these actions and/or statements.
The whole time, of course, I'm practically simmering with emotion, but I keep it to myself.
Once the relationships gets serious, then I slowly start to let my walls (floodgates would probably be better word for it) down. It's usually around this time she'll discover just how strongly I feel about her and just for how long I have been holding these feelings inside me.
Jennifer, my ENFJ, really liked that aspect about me.
So I understand what you mean by "all or nothing", I would just recommend trying to find someway of distilling the feelings down so you don't end up overwhelming whatever lucky guy winds up with you