After messing around with the "Discard Item" and "Always Summon Shinron" I can say that this will give you unlimited Dragon balls if you have at least ONE, the only problem I ran into is that after your second wish, right after the game saves, the game shuts down and you get an error message. I'm assuming it has something to do with the unlimited amount of Dragon balls you have and the game not being able to process that....but then again who knows.
If you don't mind restarting every time the game after two wishes, you can use this method to Summon Shinron as much as you want.
Awesome Job on the Editor guys, really appreciate it.
Found a solution to get around the game shutting down. Just turn off unlimited discarded items after you summon shenron the second time(before you make the wish), and you can keep summoning it. I was able to summon shenron more than 10 times to get what I wanted.