I have used powdered formula since i quit breastfeeding and i use Nursery Water as the liquid. If u get your baby used to room temperature bottles then u wont have to worry about bottle warmers and all that. I have only heated bottles that i used to prepare and keep in the frig for night time feedings. But even then, only knocked the cool off of them to about room temp. I have never gotten him used to heated formula and it works out well for me.
During the night, I fill a couple bottles up with the right amt of Nursery water and keep them on my nightstand along with the powdered formula. When he wakes, its right there for me and all I have to do is prepare them and I dont even have to get up. Thats important to me because if I get up, I cant go right back to sleep, causing me to be tired at work.
In your case, if u r heating your bottles, put the nursery water in the bottle warmer and do like i did. Dont prepare it until u r ready to use it. They recommend not to feed it them after an hour, so u dont want to waste it. To me, powder is much easier than canned formula.
Good luck and congrats.