you only have one dispensation.
i noticed you didn't show us more than one of your dispensations
and there differences
actually he quotes Gen 15:6 And he believed the LORD, and he counted it to him as righteousness. no grace mentioned,no law either
Paul says "Now to him" that is not about Abraham
that would be Christians
"What shall we say then that Abraham our father, as pertaining to the flesh, hath found? For if Abraham were justified by works, he hath whereof to glory; but not before God. For what saith the scripture? Abraham believed God, and it was counted unto him for righteousness. Now to him that worketh is the reward not reckoned of grace, but of debt" (Ro.4:1-4).
I'd have to respectfully differ with you on this; God was able to account Abraham's faith for righteousness based on God's grace - God's faith His Son's coming sacrifice would be a propitiation (fully satisfying sacrifice) for the remission of sins that are past - Romans 3:
25. Whom God hath set forth to be a propitiation through faith in his blood, to declare his righteousness for the remission of sins that are past, through the forbearance of God;
26. To declare, I say, at this time his righteousness: that he might be just, and the justifier of him which believeth in Jesus.
In those two passages are both all those who have ever, but also, all those who will ever believe God's particular (Dispensational) "Word of faith" to them.
The one is the issue of instances of grace in time past (Dispensational), the other is "but now" "at this time" a "dispensation of grace."