Here is my take on what to do next:
Read Refuse to Regain, it is one of the few books that focus on maintaining your weight loss.
Read all the threads under Maintenance, lots of little tips here and there.
I really feel that resistance training is beneficial. Also some strength training, nothing over the top. It sounds like you have to do some lifting at work, it all works. Walking and yoga are the two things that keep me going. I do lots of shorter not so aerobic, but in the fat burning zone, walks on a daily basis but try to get in a more challenging walk or a hike to get my heart rate up higher 3x a week. (I live in a hilly area, at the foot of the Rockies, so locally I walk the hills and do get into the mountains for serious hiking).
I like to stay 3 lbs. or more under my original goal weight. If I bounce up, which will occur from time to time) and hit my goal weight, I do an extended fast. Normally I do mostly IFing 4-5 days a week, but with the bounce ups, I will do 48+ hr. fasting. I also join in the Zornfast, the monthly group EX fast here because I like the tribal feel of it. It is so nice to do fasting with like minded people. So many people just zone out on you when you mention you fast or eat lots of fats.
You have done very well, nice loss in a short time frame, congrats on your commitment to your health.