Quicktree you need to get your hand on a SCAT I beam before you condemn them, if the Chinese I beams you looked at look like pot metal you have not seen the SCAT you have seen the eagle. They are waaaaaaay better than the eagle all the way around from the bolt quality the material selection the machining quality, you don't have to pay extra to get a bronze bushed small end...

A SCAT I beam is a lot lighter than an H beam and will need material removed from most cranks, more so than the H beam.

To answer the OP question, run the SCAT if you can but don't forget to add in the cost of balancing, a step that could be(but really should not if possible) skipped on a tight budget with stock rods.