As you all know by now, I am going to Vegas 2 weeks post op

I am currently in an 18/20 and some 14/16 and so now I am guessing I will be getting rid of the 18/20 sizes within the month. I dont want to buy a lot, yet I dont want to wear all my clothes 14/16 I have had in totes waiting for me from 1987 either..lmao. KIDDING, but you know what I mean. Any suggestions on what to buy when you are in the transition of sizes?
I am curious how everyone else out there that have been going down in sizes and have old clothes tucked away are doing it. My sister said dont pack too much away because you will skip over sizes and miss getting to wear them. She said keep them out in closets where I can see them and try them on from time to time (she had open gastric). Well I have 14/16 summer clothes which I know I will be able to wear first and then go down from there. I can squeeze into some, but lets say they are very uncomfortable and TIGHT! ha. Anyway.. any suggestions ?? I think I have another tote with sizes large and a few medium must haves that I want to fit into.. you could say, goal clothes.