As a man I cannot advice on the details of your questions, but I can give general advice:
a) Do not appear to be different than people of your community. You don’t have to be The most trendy etc. but as long as you don’t stick out as being “different” you are fine.
b) As being in a conversion “process” – do NOT take upon any Chumros – start with basic basic Halacha only, and slowly but surely you can start adopting Chumros. E.g. You don’t have to wear the most striking nail polish but you should/could wear some. Later on, if you feel it’s not modest enough, you can start wearing only clear or no etc . (note, this is just as an example – I am no expert on these topics)
c) The most important – Be aware that Joseph is on the extreme side, before listening to him! LOL
May you have lots of Hatzlacha on your journey and a G’mar Chasimah Tova!