Is this a good exercise routine?

I'm hoping someone who is more knowledgeable about exercise can help me out. I am very unfit and really want to start exercising asap. I have lost over 50 lbs, but it's left me looking a bit skinny fat (although I still have some weight to lose). My cousin is getting married in a month and although I'm not expecting miracles, I would love to lose a few pounds and look a little leaner by then.

I'm planning on finally joining the gym tomorrow and intend to do the following routine for the next 4 weeks or so, after which I will change things up a bit. Does this look like a good routine to do? The only exercise I currently get is walking every other day. I have another 10 lbs to lose and I want to gain muscle, or at least maintain muscle and gain strength.

5 days cardio (30-60 minutes)
1 day 20-minute intense ab workout for flat belly: https://www.youtube.com/watch?v=R9MZxVpP3XA&t=1115s&index=9&list=PLP0cBQVwhqTNb5DiCRoNKFP840iVREG8W
Strength routine (3 times a week)
o Bodyweight glute bridge (3 set, 15 reps)
o Side-lying abduction (1 set, 30 reps each side)
o Front plank (1 set, 60 seconds)
o Side plank from knees (30 seconds)
o Plank jacks (2 sets, 20 reps)
o Reverse crunch (3 sets, 20 reps)
o Cross crunches (20 reps)
o Bicycle crunches (20 reps)
o Crunches with alternate leg extensions (20 reps)
o Plank twists (20 reps)
o Walking lunges (20 reps)
o One arm dumbbell row (3 sets, 10 reps)
o Dumbbell/machine bench press (3 sets, 10 reps)
o Dumbbell Romanian deadlift (3 sets, 10 reps)
o Squats with dumbbells (3 sets, 10 reps)
o Dumbbell row (3 sets, 10 reps)
o Squat row with dumbbells (3 sets, 10 reps)
o Pendulum lunge with dumbbells (3 sets, 10 reps)