Its been said before, lack of preparation will kill you.
If the wx goes bad, how bad is it?
Is it close to minima?
Will you get in?
What if the ILS falls over? Can you fly a non precision approach?
What if your radio fails? More likely than the radar failing, same result, no vectors and what do I do now?
Did the notams get checked for IFR stuff?
Did the notams & wx get checked for a now IFR alternate?
How do you fly a missed approach, without comms?
Just some questions to consider, IFR is more than following needles.
Prevention is the key, not certified don't do it.
Invariably when sh*t happens, its all over the place.