As for ADD reloads, I would tend to give them just 1 reload. However, now that I think about it, the SSDs generally show ADD12s with a pair of boxes under each one in the main track. For example, the E4E (which I happen to have on hand), always had 4 ADD12s, and the SSD shows the extra boxes underneath each main box. That would indicate 2 reloads. I need to check the rules, but that's my best interpretation at the moment.
On the other hand, the F5V shows 12 rounds with 2 reloads on the SSD, but notes "6 rounds before Y175 refit; 12 after." It does not mention reloads. My guess is the rules cover the default reloads all ADD racks should get (Gs being a different case -- they never have more than 1 reload worth of ADDs, which technically is not a reload, but the only 6 rounds it should have). I'll have to check the rules later.
Plasma-D have similar rules. On the G-CV, for instance, the tracks show 4 main boxes with a pair of smaller boxes for each, and the note "one reload prior to Y175; two reloads Y175 & after." So, the Plasma-D would have 4 rounds and 1 reload set of 4 pre-Y175, 2 post-Y175.
The one thing that troubles me most about drone reloads is that ALL drone ships can purchase up to 4 reloads, making the limits almost useless. The only difference is they have to pay for the reloads instead of having them to start. Of course, many ships get "cheated" out of drones because they don't get their cargo-storage reloads (though these would not be generally usable mid-battle).
So, one way or the other, allowances have to be made for the differences between what SFB allows and what is possible in SFC.
One last note: some ships in the default list get ADD12s earlier than they should (usually Y175), often because the ship skips a refit step as I described in my post above.
Whew, what a jumble!