I think that a lot of people here, being of a certain background, may lack a degree of objectiveness when it comes to posts like yours- and may identify in you things which you may not have actually said exist, because it is what they are used to or what they see in themselves.
Now the definition of "Transgender" seems to be perptually shifting, so I'm gonna stay clear of that for now and bring up one specific thing.
You said the thought of having a penis "turns you on". Now this, far from being a perversion, is at the very least a sexual fetish/fantasy, and in my opinion *not* indicative of GID (Gender Identity Dissoder) which many people seem to believe is requisite for being considered "transgendered", and almost certainly is for transitioning.
That is to say, if you were to transition, it might be for sexual motives rather than identifying with a different gender, and when that procedure is complete, and the fantasy wears off - well I'm sure I don't need to explain that messy situation.
My point is simply this, we've all "thought" about what it would be like to be another gender at some point, and for those of us who get turned on by that thought, well that's getting into sexual territory and moving definitively away from "gender" territory.
So while the definition of being "transgendered" can be somewhat elusive, don't let yourself be talked into thinking you have gender identity issues, when in fact you may not. If you would miss being female, then there's no reason to consider doing otherwise, and your stuffing can be considered simply a form of sexual crossdressing.
My only worry is that all this talk of gender therapists and ->-bleeped-<- and identity and so forth might inadvertantly twist your arm into going down a path you think you should travel, but that isn't actually right for you.
That's all I have to say.

Truth Seeker