After two weeks, adjust rep scheme to 6 to 8 reps for two to three sets.
The weight you choose is based on your level of fitness. If the final rep of 12 is easy, you should increase the weight. Perform this rep range for two weeks. Then progress to two to three sets of 8 to 10 reps. After two weeks, adjust rep scheme to 6 to 8 reps for two to three sets. Consider investing in adjustable kettlebells or dumbbells if you have limited space for multiple sets of weights.