I'm doing the exact same thing. Been keeping fish for 3-4 years. Seems like every few months I change everything. I decided to go all in on a dovii pair in my 360 long term. I ordered six 1.5 inch nics from Rapps a couple weeks ago. Just moved them into the big tank about an hour ago. They're about 1.75 inches now. Best of luck to you. I know the struggle!
I have noticed over the past week or so that the black line on the male is fading a bit. They have grown since I got them and are showing a little more attitude. The female is less scared of me than the male at this point in time.