As has been mentioned, there's no one around with infamy to spare and help out your leveling villain. What you earn is what you've got.
Knowing this, I chose to bite the bullet and forego the joyous DO upgrade at 12 and the all-powerful SO upgrade at 22. I used TOs until level 22 at which time I bought DOs, not SOs. Being an endurance hungry Brute, I splurged and bought one SO for Stamina. I bought a few more important-to-my-build SOs at level 27. It was not until level 32 that I finally bought all SOs for all of my slots.
Now, at 34, I'm finding the drops to be far better and it keeps me from having to buy every slot's SO. Infamy seems much better too as I have about 1.6 mil saved up. It's painful I know, but my advice would be to use what you can more than afford for much longer than you would in CoH. *shrug* Take it or leave it.