Used Injectors&Pump

I bought a set of used 24# injectors and a fuel pump from a guy last year. I have not had time to put them in. My question is if the injectors or the pump will ever get all gummed up or anything that will ruin them. I plan on putting new seals on the injectors and everything before I put them in
 
I would get them tested and flow checked to make sure they all flow the same. You can get a rebuild kit from Napa which includes the screen and o-rings. Go that route since they have been sitting around.

Allen