Unless you try eleven films you should be ok I keep 2 litres of ID68 (Microphen) in an accordion cause I use 1.5 litre Patterson tank for 5x36 films allows 20 films
I've done 25 in error and the last 5 were well contrasty...
There is a risk of particles, film debris and 1+3 is cheaper and probably sharper.

I have bad allergies so don't like metol options.