You seem really happy with using the U.S. Navy tables for repetitive diving, but you should be aware of the fact that its rules for repetitive diving were the primary reason that other tables were developed.
The rules for repetitive diving are based on clearing a selected theoretical compartment, and the Navy tables repetitive dive schedule was based on the compartment with a 120 minute half time. That decision was fairly arbitrary. Since it takes 6 half times to clear a compartment, you will see that the Navy tables wash out in 12 hours. That leads to very long surface interval requirements for repetitive diving. those long surface intervals were a problem for recreational diving operations wanting to do 2-tank dives.
In the ear;y 1980s, PADI's DSAT organization began research to try to determine what would be more suitable for the kinds of dives done by recreational divers rather than Navy divers. Their research was exhaustive. That research indicated that for the kind of no-decompression dives they were testing, the 40 minute compartment could be safely used to plan repetitive diving. They decided to be more conservative than that, though, so they had the 60 minute compartment guide the surface intervals, and to add another layer of conservancy, they shortened the first dive time limits.
Most dive computers today use algorithms that are more consistent with (or identical to) the PADI studies than the old Navy tables.
Thus, if you use the Navy tables or any other tables based on the Navy tables, as you seem to be insistent upon, you will find yourself having slightly longer NDLs for your first dives, but you will also have significantly longer surface intervals between dives than with the PADI tables or with any computer algorithm.
