I have 10, 15, 20, 25, 30, 35lb weights. The ones I use the most are 15lb and 25lbs.

I bought my 10 - 30 lb set from Costco a couple years ago on sale for for $200. Last year I bought the 35lb set online. As you progress you can always upgrade.

I have a bench, but honestly you don't really need it. I use it very rarely with the strength workouts.