This is really motivating to see. I'm same height at one eighty and just got started this week. Have been gaining slowly after kids and finally fed up with how I feel. You look fantastic.
Nice progress—four months and 32 down with no muscle loss is solid. What're you using to track BF%? Keep it up. Don't sweat if you stall or gain a couple here and there. Keep working and it'll come. You're crushing it!