What equipment do I need for stronglifts?

JulieAnn72

All I have is a barbell, two dumbbells and the following plates:

2 25lb
4 10lb
4 5lb

I don't have a squat rack or bench.

I currently do strength training workouts on Fitness Blender and Workout Trainer, which include things like dumbbell rows, chest presses, overhead presses, triceps extensions, squats (with hands at sides), etc. I generally use my 10lb dumbbells instead of the weights listed above, and can do a few sets of 10-20, so basically low weight, high reps. I'd like to try lifting heavier weights and doing fewer reps (something like Stronglifts 5x5), but don't want to make a huge investment.

So can I incorporate some heavy lifting into my routine using the equipment I listed above, or do I have to go out and buy more plates and a bench/rack? What would you buy initially in terms of plates to add to what I have above? And can I do it without the squat rack and bench? Are there modifications if you don't have those?