As a medical student I feel as though I can help here.
MODOK touched on the most important lifestyle adaptions, namely salt restriction and weight loss, and I can't emphasize these enough, there have been NUMEROUS studies which show that sodium reduction (preferably <1500 mg/day but this is difficult) leads to a reduction in blood pressure and surely even more that link weight loss to reduced blood pressure. What is your height, weight, BF % currently?
I also want to say that a blood pressure of 160/90 is an important health concern and as I'm sure you know, puts you at an increased risk of cardiovascular disease. As well long term, uncontrolled hypertension can lead to physical changes to your heart (ie. certain chambers of your heart will hypertrophy, much like your muscles hypertrophy when exposed to an increased load, but this hypertrophy is pathological and can lead to changes which make it difficult for your heart to properly fill).
The last thing you want is to become a walking pharmacy at age 20, on numerous medications to keep your blood pressure down, as with more medications comes more side effects, so I urge you to keep reducing your blood pressure as the main goal of your training. You should not stop lifting, instead maybe start all your workouts with a half hour of steady state cardio, and build this up as you become more fit.
I wish you all the best and don't hesitate to PM me any questions you may have.