Crobat

No reason to. If you like it sure but I would stop my power ups there. Just fine for attacking grasses and fighters if you see them

No, it got the best moveset sure but the species doesn't worth your stardust, not to mention you're so low on stardust too.

Power up a currently maxed out pokemon?

Is this a show of??

Or are you asking for the distant future after you have grinded afew more levels

Hold on to him in case they change stats in the future but crobat is a totally unworthy species of stardust for now.

Crobat suck bottom in defense but rocks in offense and cut out damages nicely depending on what pokemons you are facing, even snorlaxs fail on it. In case your main attacking pokemon died, Crobat is a good backup. Air slash is good for charging the bar and damage. Sludge bomb is a very quick charge move with high damage output and very low cooldown that I found him useful in many places. And the move with or without resistant dishes out good damage despite its lower cp.

So I would say, if you have already have other pokemons in hand and got some stardust standing there without much use, then put some in Crobat. It is not as good as Exeggutor or Flareon but definitely worth it.

Downside of Crobat is, that if the quick move is Bite, the damage output will suffer. And anything that is not sludge bomb does not work. Moreover, be careful with psychic attack and prepare to dodge them when you need to do so. They dish out good damage at relative low time but they die very fast too.

wifi too bad in peru / image doesnt show; unless he has double flying moves no; otherwise yes as a luxury attacker/prestiger

Mine doesn't have the best moveset but i love to use him against Psychic type pokemon because of shadow ball.....yeah i know smh stupid Niantic wanna give shadow ball to mons weak against Psychic