Day 6, Making Kana Progress

I am having some progress with smart.fm. I am now at 84 out of 104 new items and 35% completed on my hiragana Goal. I am sort of hating the romaji part though I don't think the letter chosen match the sound I hear in English so I keep getting silly errors. I am going to buy tons of kids books at Bookoff once I have finished both sets of kana. Then I will get much better at remembering them by reading to my daughter. I am trying to decide if I should hold off on starting katakana until hiragana is complete or if I should start after I have learned all of the new characters in hiragana.