Lost 100 pounds and trying to firm up!

Hello! Looking for some guidance here. :-)

I've lost almost 100lbs. over the past couple years. I am 5'9", 154lbs. and 23.5% body fat. I would like to be between 18% and 20%. I believe I eat clean. My meals throughout the day are a lean protein and vegetables and my snacks are pretty much always Quest Bars and protein shakes. I'm aiming for 30% carbs, 30% fats and 40% protein. I usually end up with close to a gram of protein for every pound I weigh. I'm eating at 200 to 300 calories under maintenance according to my Fitbit. I'm lifting heavy at least four days a week. 3 or 4 sets of 8-10 reps, heavy to the point that I can't do more than that without sacrificing form. I warm up with 15 minutes of HIIT or a mile of jogging. I like to run, and would like to be able to run 3-6 miles a couple times a week now that the weather is nicer, but I've tried to avoid that because I'm afraid it's counteractive to my goals. I've been doing the above about 5 or 6 weeks. I have seen changes in my body. More muscle seems to be peaking through, body fat has dropped 2% and the scale has maybe dropped three pounds.

So that's the background. Here's the question. Is that what I should be doing? My goal is to look strong. My belly and arms are still flabby. I want them to be tight. I want to see abs, shoulders and triceps. Really everything for that matter! Should I eat more? Eat less? Change my macros? Increase the HIIT? Drop cardio all together?

I'm not discouraged at all. I know it takes time! I've seen some changes in the last few weeks, so maybe I should keep doing what I'm doing, but I just thought I'd reach out and see if anyone has any advice.

Thanks so much!