looper hitter but better at chopping.

At your age and level you should pick a style that you like to play.  You are not likely to get to a national team level no matter what style you choose so just do what you enjoy doing the most.  You are more likely to practice and therefore improve if you do something you like doing.  Maybe you are naturally one of those "all-around" players who can do a lot of different things.  This can be very effective if you can learn to see what your opponent does not do well against and then switch to that style. 

It is always a trade-off.  The more different types of strokes you use the more practice time you must put in to bring them all up to a particular level.  However, if you have a lot of different strokes you can hit you can often find one, even if it is only executed at a lower level, that will give a particular opponent lots of trouble.  This is particularly true against players below the USATT 2000 rating who almost always have parts of their game much weaker  than others.  But no matter what you decide, you will only start winning consistently against the level of players that just barely beat you  when you improve the level of all the strokes you use.  If 1000 level players beat you then your strokes need to come up to a certain level of execution before you beat them.  Once you are there you will need too improve those strokes even more to beat 1400 level players.  And improve them even more to beat 1800 level players.

Most important thing is to have fun.

Mark

You will be outclassed by higher level players if all you do is chop. If you plan to play at a higher level, you must either do what you suggested - loop and counter style game, or switch to a modern defensive style (difficult for less mobile players though).

That being said, there is absolutely no problem with developing a heavy push/chop to incorporate in your game - just don't rely on it too much and use a variety of strokes.