Probably not a good idea to do a practice touch so close to pull time after a formation jump. May cause confusion. Rather do a Solo jump from higher and do 2 or 3 practice practice pulls before dumping if you need more confidence.
I remember doing camera for a 3 way with relatively inexperienced jumpers and, despite, a good ground briefing explaining to them to track the hell out of there as I was going to deploy directly above them on wave off (cameraman has centre of formation), one jumper did a lazy track and started going for his hackey directly below and just slightly to the side of me as I was going for mine. Nearly gave me a heart attack - fortunately he looked up and realised there was someone above him and tracked further. By that time I had deployed ! With my heart in my mouth !
Nope not a good idea to do practice pulls on a formation jump !
Rich ---------------------------------------
Everything that happens to you in life is your teacher. The secret is to learn to sit at the feet of your life and be taught.