Doesn't this position just put more of the effort onto your quads and less onto the bigger hamstrings and glutes? The first tendency is going to be for your hips to rise in order to load the posterior chain, which you are going to have to fight with your quads. You're reducing hip extension by increasing knee extension,and hip extension strength is generally much stronger (and has a larger capacity for strength).
Last week was doubles for me, leading up to 1rm testing week this week.
My first meet is in a little less than six weeks. Im looking forward to it.