Ah I see. Yes it is fine to do it that way. Technically that would be conjugate periodization (ie working on training more than one thing at a time) vs more traditional block or linear periodization where you might do 8 weeks of 3x10, 8 weeks of 3x3, etc
I think the lower body lifts, particular variations on the three you listed above tend to be the best from a fat burning and overall muscle building perspective. Getting your leg limit strength up will make you faster on the field as well. If you wanted to go with a traditional bodybuilder type routine for a "leg day," you'd probably want something like 5 exercises in there, split up between quads, hams, glutes, calves. One good idea for you might be putting one squat variation and one deadlift variation, one single leg lift variation, and one calf lift variation in each lower body workout. Since you hit it twice a week, you can have one day focused on glute/hamstring and one more focused on quad. So, just a suggestion, but what I would do on my arm/leg day if I were you would probably be something like:
Leg/Arm D1:
Legs:
Squat 5x5
Romanian Deadlift (or stiff legged or good morning or pullthroughs) 3x8-10
Walking DB Lunges 3x8-10 each leg
Standing Calf Raise 4x6-8
Leg/Arm D2:
Leg:
Front Squat 5x3
Deadlift 5x5
Bulgarian Split Squats 3x8-10 each leg
Sitting Calf Raise 3x8-10
For arms, maybe cut your exercises to four total? two of each?
You can do back first before chest on the upper body day if you want to focus on it. Maybe add in another exercise like some sort of pull down or dumbell row also, depending on your energy level when doing these workouts.
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Whatever you do, go for it!
