Have been doing PTP mixed with CC for the past 4 months with great results and would like to add KB to the repertoire. I have two questions which have probably been answered in previous posts: 1) Should I purchase all three KBs now or start with the 16kb and 24kb and wait on the 32kb? My current PRs are: DL 365x5 and 410x1; Side Press 85x5. 2) Also, should I get the book or video or both for reference? Thanks in advance.