I don't want to go through the expense, pain and sacrifices of having bottom surgery and still have to wear a packer afterwards. For me, it defeats the purpose. Yes, I want to be able to pee standing up - but more than that, I want to have something that I am happy to look down and see every day - and which makes me feel less dysphoric, not more. I think that having to still wear a packer after bottom surgery would be very triggering for me, and would probably make me feel as though I would have endured all of the pain for not much gain.
So that being said, I'm also going to opt for phalloplasty first as I don't believe that I have enough growth "down there" to lend tissue to an adequately-sized metoidioplasty.