Secondly, Technical Analysis can be used in both short and long term period which makes it more useful to traders

You are right but positional traders should also give due importance to fundamental analys .

Establishing your entry and exit points and knowing the size of your position to minimize your risk.

You are right to dmsay that enret and exit points can be found . Position sizing is very important for traders as part of trader psychology because we tend to oversize often due to grees .
Good luck.