If you make an empty proyect in rpg maker mv and build it into an android app it will size like 35 mb, you can not make an app less tan 35 mb as i experimented, that means that if you want to make your game into google play you have around 65 mb to spend on your game, more or less. Be careful with the music, remember you need to duplicate each track because you must have both formats for each song.
As i have read you can not put adverts into your game.
The android devices are like old time computer, most of them have like 2 gb de ram and let around 1 for games, the amount of events per map also the size of the map are reduced drastically in mobile. While in windows the game starts to give signals of lag passing over the 180 moving events; in mobile should be less, i am testing the limits of events but cant figure out at all, i assume is like 50 events, maybe less. The parallel process are drastically reduced too, use them the less possible, is better just call the common events than let them ruining all time.
If you have the environment of your computer ready for the conversion there will still exist some problems building projects with the python command but they are a few, due to the technical knowledge to software like ant.
By the way when you are following the instructions in the manual of rpg maker ace, make sure you do not copy and paste all of its example manifest code, they add extra icons to the code in order to test your attention to the tutorial or maybe they just want to mess up with you (¿some kind of initiation ritual maybe?), i had like 10 failure attempts building projects due that extra code (But when you can solve the problems you feel like a god)