In MY opinion you shouldn’t need a PMK, especially if you dont want to wait.
I guess it depends on how you are with pain though…
imagine a bee sting, giving blood, an ear piercing, a single dot of a tattoo

ie. Just a quick pinch and it’s over.
Otherwise you sound all prepped, just use appropriate aseptic procedures and you will be fine.
Again MY opinion, but truly, a cut, scrape graze or prick out in the real world in everyday life is more likely to cause an infection. and how often does that happen?
In saying that, dont go stabbing your sterile syringe into
before you stab yourself 
What I’m trying to say is, just use some common sense don’t over think it and you will be fine.
It’s not rocket surgery


I know this will be a very unpopular comment, but again that’s just MY opinion
Dont forget
post install procedures.
dispose of Needle and blood products appropriately.
Pre-natal vitamins
Plasters
Standard hygiene practices.
Good luck