Can someone PLEASE provide definitive feedback on this?

I am playing Skyrim remastered on PS4, without mods.

OK - I'll run through a hypothetical example of how I want to structure my charcater build and you guys tell me if it is going to work, or not.

So..........I want to be a necromage vampire archer.

I am currently level 1 and have not leveled a single skill or completed a single quest. Just got to Whiterun.

I ultimately want to obtain EVERY perk in the archery skill tree.

My major question is........................Do I have to become a vampire FIRST. Then take Necromage. And finally take the perks I want Necromage to affect?

Or can I do it in any order? So for example; can I take an archery perk and then take Necromage and then become a vampire?

Also, does anyone know how if I need to be careful with the "steady hand" archery perk? I thought there was some glitch that would really mess up your slo-mo timing if you took that perk AFTER necromage!

Please help me out guys - thanks!!!

One thread is best: http://www.gamesas.com/topic/1612468-necromage-question-please-help/