You realize that the Senshushei program is, literally, making people from scratch to Shodan in 11 months, right? I believe it's 3 hours a day, 5 days a week.
Why are you so concerned with making shodan? Be concerned with learning Aikido. Aikidoka will tell you that you don't start to learn Aikido UNTIL
you make shodan. I think your looking to Aikido for the wrong things, I hope you find what it is your looking for.