Generally speaking, if you are in a position where deductions and credits matter (ie. not standard deduction), you really aught to seek a professional to review your filing before submission, or at a minimum use two different softwares to compute your taxes and look for any disagreement (in theory, they should have the same output).

Either way, the $49 to use the software is trivial (under this situation) and often is only paid if you use that software to submit your taxes (meaning you can "get a second opinion" for free).

* deducting turbo tax fees from your refund amount incurs a 59.95 convenience fee (hopefully they don't do this anymore. They did it to me a few years ago and wouldn't refund the charge when I didn't notice and called to cancel it).