Actually I think I just found out why the negs came out a bit dense. I should have multiplied the development time by 1.4 instead of 2. Duh.

I will try it again but this time I will do:
1. dil b
2. dil h with time X 1.4 of dil b
3. rodinal 1:50
4. rodinal 1:100 with time X 1.4 of 1:50

What I am looking for is an increased tonal range, but with out increasing grain.

If anyone has done this testing and wants to share their results that would be great. I hate re-inventing the wheel if it's not necessary.