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!