Those are all of the fees required at this time. Don't forget to submit the I-864 (but no extra fee is required for that).
If you wish to submit an I-131 as well, you may do so, and there is no extra fee for that either, if submitted along with, or after, the other forms.
I suggest that you consult with an experienced immigration attorney to be sure that everything is in good shape and to ensure the best chance of success.
(734) 369-3131. This communication does not establish and attorney-client relationship with the Law Office of Michael Carlin PLLC or any individual member of the office. Confidential information should not be sent through this form.
Here is the USCIS official page that contains all of the instructions and forms: http://www.uscis.gov/portal/site/uscis/menuitem.5af9bb95919f35e66f614176543f6d1a/?vgnextoid=3faf2c1a6855d010VgnVCM10000048f3d6a1RCRD&vgnextchannel=db029c7755cb9010VgnVCM10000045f3d6a1RCRD