Q:49 - if you are very careful, you may get to 50.
V:28 - Always remember that Verbal section measures your ability to use English in a concise, accurate, and organized (easy to follow) way. Have a big picture when you do RC and CR. See how information is introduced, organized, deduced, and delivered (construct a logical or structural map in your mind). SC is very difficult to be improved. RC & CR are more easier. Balance your time.
You've made good points. However I would like to point out that you made several errors: SC is very difficult to improve (I don't think to be improved correct) Also, more easier is wrong, more should be eliminated EASIER.