Then I guess with the new system (at least what I have been able to find) you must do "Grade 1" X Number of times and you can't specifically pick which Grade 1 you will get. So You may get the Grade 1 Faster Boot or Shielded upgrade a couple of times (but only counting once) before you might get the Range Increase...THEN you can move to Grade 2 and start over again.
No, that is totally incorrect.
You choose which mod you want beforehand.
Rolling multiple times always results in benefit to the same aspects; eg range, boot time OR integrity.