Congratulations!
Sounds like you will have some fun assembling your “ new” wardrobe ( new plus te- working existing items.
I have sort of generic comments— which is, with a more casual dress code— or maybe not just more casual, but less rigid - you can give more thought to how your work wardrobe does not have to be as separate from other activities, as it might with say, business formal. That means you may be able to have a smaller wardrobe, not small for small’s sake , but allowing you to buy the best quality- again not necessarily the most expensive, but more leeway to buy what you really love and to refresh or update as your style or job needs change. Also, to some extent, great quality can exude more authority & allow more leeway in creative dressing, whether it’s more color or juxtaposing a more casual style item with more formal. So it’s a great opportunity to be picky about fabrics that wear well , and good fit, and save some budget room for tailoring. Often we think of that just for tailored business wear , but it applies to all styles. Kind of related to this is that it’s often true that cheaper construction shows less if item is a dark neutral, like black. So the flip side is I often find that pastels, light neutrals and a lot of prints show quality flaws or “ cheap” appearance more easily , and if I wanted to wear them in a more professional setting, I needed to look for more luxe fabrics and great construction. Then there is the related maxim from Dress for Success, which advised scouting out/ trying on high- end items ( meaning $$$ plus great quality) and then shopping at a lower price point while noting which color and fabric at lower end gave more of the vibe of high- end. I’ve done that sometimes been surprised by how differently something may translate in different color ways. That was a lot easier when there were more brick and mortar stores.