I want to train for the 100 IM. My current time is about 1:25, and I want to get it as close as possible to 1:10 in the next 3-4 months. I also want to improve my times in the 50's of each stroke, which should improve naturally as my IM improves. I am in college and swimming with my college club swim team, which swims 3x a week (1 hr practices) and is uncoached. I also usually swim 1-2x a week by myself for about 1 hr. What should I work on? What sort of sets will be most beneficial? How can I change distance sets to make them more beneficial for me?