5 months about then.
1-2 pounds lost per week puts you at: (Math) 5 x 4 x 2 = 40 pounds on the top end and 20 pounds on the lower end
You would do well to shed weight in the beginning and as you progressed it would become more difficult to drop.
I'd say safely losing 30 pounds is feasable with a caloric deficit and exercise, but nothing extreme.
Getting down to 220 would have you feeling better, and then another 5 months to get down to 200. That would be awesome. It took me 2 years to go from 298 to 230, and the first half of it was changing my diet. You can't be in a hurry, but you do have your lifting history and muscle memory going for you, and it will lend itself nicely to a great recomp!
I trust
BEAST73 would be a great coach. He is a living example of what he preaches. He may have other math based on programming and diet structure, which I'd love to see. Maybe you can log your progress and be an inspiration for us all.
Good luck!