One thing I noticed is that you have been with WGT since 2012, and this appears to be your first post... I'm not certain if you read the threads, but one is titled the 12 days of Xmas, where many Santa's gift people with better equipment, balls, whatever. You may want to start putting your name forth during this time...there is a good chance you will receive a better club(s) to help you.
Another point is that you have all starter kit, but are using Nike balls?...these are among the most expensive brands. If you could get used to playing with cheaper balls (and there are many types to choose from), this would free up money to buy better equipment. It's not possible, for even a very skilled player, to take full advantage of the Nike's performance with the clubs you are using. The Nike balls are basically a waste of money at this time.
ct