"We... yeah, we can probably make it happen," al-Zawahi said after some thought, "Although there are a few potential risks involved with such a modified version of the Queen's Stallion procedure. Not so much with the assets individually, but more with the mental stuff."
"What sort of risks?" Alex asked, "We can handle them."
"For starters," the doctor began, pulling out a binder and thumbing through it, "Most of the standard Dorse health requirements may need to be amplified to compensate for the altered endowments. Assuming Susie is a regular Dorse, for sake of explanation, she would have to get her balls drained daily to avoid backups and potential prostate problems. Dorse cum is quite thick, and they make a lot of it, so it's important to drain them regularly. She would also need to be stimulated in either her vagina or anus at least once a day, which is why we provide the vibrator tail. If she isn't stimulated for more that a day, she'll start to lose her higher mental functions and have difficulty talking, devolving to not much more than sexual moans or neighing. That's how horny Dorses get. Lastly, along with needing an increased amount of calories period, she would have to consume at least two liters of cum daily. It won't work with her own cum, she'll need a different source. If she doesn't swallow a sufficient amount she'll start to get malnourished and prone to illness. Luckily, Alex, you are offering yourself to be a feeder for her, so that's covered.
"Now, given that a lot of her assets will be amplified to ludicrous extremes," the doctor continued, "She's going to require at least twice the daily stimulation, draining, and nutrition just to keep it all running. As for the mental changes... While we can't make her completely perma-aroused, we can make her be constantly aroused while conscious. If you want her to physically be unable to sleep or orgasm without permission, both of you will need to have a few cybernetics implanted into your brains, establishing a permanent mental link."
"Ooh, that sounds... very intimate," Susie cooed, "Like... as intimate as you can go. I'm on board with that idea."
"Same here," Alex agreed, "Thanks again for humoring my crazy request, doctor. Again, let me reiterate that money is no object."
"In that case," Doctor al-Zawahi grinned, "We can begin in earnest."