Don't listen to this guy. Your case is pretty straightforward and if you consider yourself somewhat bright and thorough with your work research from these threads and meticulous detail when submitting your applications should be enough. If you do start facing some complications you can always contact a lawyer and I'm sure they will be happy to take over your case.

There were so many DREAMers that were scared to initiate this process when it first started, and in all honesty it didn't end up being that complicated but many chose the lawyer route and ended up paying thousands of dollars for a very simple request.

Best of luck in whatever option you choose.