Do what Tamariz asks you to do, and I am almost sure that you will get it after 6 straight hours with 5minute breaks in-between. I sang a song with each card a different pitch/a different style on my phone, set it on infinity mode to repeat itself over and over, and begun spending 2 minutes drawing cards (circling the diamonds or if there was a correlation between the cards like 9th NINE of diamonds) while singing along or if I couldn't go fast enough singing the tune of the card I was drawing. Like Tamariz says, you should exaggerate your movement of your mouth when you speak.
I did the App afterwards, but it helps only a tiny bit. After you do Tamariz's 5 ways to memorize the deck, you are set.
Brute force may work, but if you don't perform Mnemonica for a while (a few weeks) then you may forget it in a year. But using mnemonics as well as following Tamariz's instructions, you will never forget it.
If you still need help memorizing, buy "The Memory Arts-Mnemonica Edition" from vanishinginc. The authors might have good tips/instructions on memorizing Mnemonica.
As for setting up the stack, start with the deck in new deck order, but cut as having the Ace of spades, followed by the king of spades, etc. on top. Reverse the bottom 13 cards (w/ overhand shuffle) and place them back on the bottom. Then reverse the 13 diamonds with the same overhand shuffle and replace, then the same w/ the clubs. Then give the deck 4 outer faros. Then overhand shuffle reverse the top 26 cards. Then run over 18 cards, and outer faro it into the deck. Finally, cut to the 9 of diamonds. In this time, you pretty much broke in your new deck, if you do a few lepaul spreads and springs!