weight loss- Cardio vs weight training

Hi,

I hope this message finds you doing well. I am 5'7 and weigh 245 lbs, I have been to the doctor and besides being obese, Im in good health, no high blood pressure or any of that. I generally eat very clean but I had a couple of family tragedies and was stuck at the hospital 24/7. My question is with being so heavy should I start out with cardio and lose down some before I start weight lifting or should I start wl for 4 weeks clean up my diet and then start cardio. Thanks all help is appreciated.