Been playing with an odd set myself for 5+ years without any problems.
Did this on purpose to develop feel more.
Setup with LW, SW, GP, 9i, 7i, 5i, 2 1/2i, 7W, 5W, 3W, Driver and putter.
So 12 in all.
I often leave my 7W at home now. Was being used as my "get out of jail" club. Been able to dial in a softer 3W (not 5W).
The 5W is only used on long par 3's in the 210-220 range. So rarely used.
The 2 1/2i is my driver on those windy days when I need to keep it down.
Interestingly the LW isn't getting much play.
I might experiment leaving the 7W and LW at home and see what happens.
One club I wish I had was a 6i. I often find myself having a tougher time dialing in a soft enough 5i or hard enough 7i.