Double penetration for girlfriend... With ts

So i have just under 7".. Couldn't just givd me 7 ffs.
Anyways i guess all the porn has made me fantasise about seeing a big dick in my girlfriend but im just not up for sharing with a man so i had the idea of a transexual as i know my girlfriend is not attracted to them. So i put the idea out there one night when we were smashed, i said i sometimes think about her getting fucked by a big cock minimum 9"...she was a bit shocked at first but i explained i just want to see her in a state of pleasure. With two cocks in her, mine and as explained above.
I think i will enjoy seeing her attempting to fit that in her tiny pussy. Shes a small girl its ridiculous how tight she is. I will have to make her cum first i think. Then to top it off when she has hopefully a 10" monster as far as it will go in her pussy i will come and put my cock in her ass... I can make her cum ten times some Nights on my own(thats the record so far) so i cant imagine the pleasure she will get. I'll swap holes with the mega cock ass to pussy and at some point i just want to sit back and probably video her trying to ride that massive member.. Her pussy grips my cock amazingly i cant imagine how well it will grip that size.. We talk about it now and i see she really wants it. sparkle in her eyes now and how wet she gets when we talk about double penetration.
Im wondering when shes in the horn of the moment if she is going to suggest something to me as she has kind of dropped hints about fucking my ass and stuff.
Exciting stuff it gets me hard thinking about it, my small oriental girlfriend sucking two cocks.. Will she make them touch? To see her impaled on a 10 inch post while i hammer her ass.. Then swap
And swap again to feel what mess its made of her tiny pussy. I do wonder if she will get it in? Once i showed her the trans women with huge cocks she got really fucking horny and wanked me off.. She fucked me a lot harder that night as well.
I think her eyes will be bigger than her pussy 😅..
To be honest i hope it hurts her so she may not want that size again ha ha.
Dont want to turn that cute little thing into a permanent hallway.
Things have been pretty spicy since we talked about it and we've been a lot More open with each other, i guess because it was a dark desire and a risk to share with her, that i want a transexual to fuck her together with me.

Her cute little hole is gonna cream up like the top of a hot chocolate. I mentioned it the other day and she was literally, seriously, actually dripping wet. I think the excitement of the unknown for her. Im the biggest shes had.

I do want to just sit back for ten minutes, stroke my cock and watch her pussy grip..
I've had a dildo in her ass while i fucked her and i could literally feel it trying to push me out and or fly out as she's just so tight in both holes i could feel everything about that dildo through that thin layer Inbetween. Im just thinking what it will feel like then, with ten inches stuffed in her...damn. Gonna feel amazing.
Also seeing her trying to get a girthy 10 inches in her Mouth, will she even be able to get past the helmet..
Fuck it excites me.
Any thoughts or tips 👌