You can't do SL5x5 with dumbbells, because SL5x5 and similar linear progression routines rely on being able to add small increments of weight to the bar (2.5lbs per side, so you go up in 5lb increments). With a dumbbell, even if you have 2.5 increments (which is rare), you are training unilaterally, so it's harder. Using two 50lb dumbbells to bench press is much harder than benching 100lbs with a barbell.
So instead of trying to conform to a barbell linear progression program, you have to use a changing setXrep range while keeping the weight something you can safely work with. Also you have to use more isolation exercises, as this plays to the strength of the dumbbell.
I can't link you to any dumbbell program online, but I can modify my own routine to be dumbbell only:
A
>3x5-8 Deadlift
>4x5-8 Bench
>4x5-8 Row
>2x6-12 Skullcrusher
>2x6-12 Hammer Curl
>3x8-15 Lateral Raise
>4x8-15 Shrug
B
>4x5-15 OHP
>4x5-8 Pullup (only one that's not a dumbbell)
>3x5-12 Stepup or Lunge
>2x6-12 Triceps Kickback
>2x6-12 Standing Curl
>3x8-15 Lateral Raise
>4x8-15 Shrug
You can linearly progress your deadlift up two 45lb dumbbells for a short while. After that you'll have to switch to single leg deadlifts. Or just start with single leg.
45lb goblet squats aren't going to do much unless you start doing some plyometric circuit training. Instead, you can do step ups or lunges.
For bench, row, and The Press, I put 4x5-8, but it might be more like 4-6x5-20. First add a set. Then add reps. Only after that should you add weight. Adding weight too soon with dumbbells can fuck a lot of stuff up. This is the key with dumbbells: PROGRESS THE SETXREP SCHEME before the weight.
Also, make sure your lateral raises are light weight (5lb). You can swap one of the shrugs with a dumbbell pullover or a light (5lb) incline W raise.
You can also do more bodyweight progressions, as it will help you understand deleveraging the exercise.