I did a very similar thing last year, went from category based cards to major-based and loved it. I had a pre-established 2-digit fully Major PAO and it worked great adding the cards into it. The big benefit I saw was being able to literally read each card and visualize everything without having to try to reassociate a bunch of arbitrary connections.
My approach was to use the value and suit to dictate which major system PAO items the cards represented.
10’s get the “0,” S/Z sound.
Aces get the “1,” T/D/TH sound.
The rest of the numbers get their associated Major sounds.
For suits:
Spades is 1 (one point on top)
Hearts is 2 (two curves on the top of the heart)
Clubs is 3 (three puffball branches or whatever)
Diamonds is 4 (four points on a the diamond)
So to convert the number cards, you read number first then suit. 3 of Hearts is 32. 6 of Spades is 61, etc.
For Face cards, the structure is reversed and the suit gives the first digit/sound.
Jacks give J/SH/CH (Jack starts with J sound)
Kings give K/G (King starts with K sound)
Queens give F/V (Cliche “female form” is hourglass 8.)
Jack of Clubs is 36, MaCHo: M for clubs, CH for Jack.
This way for all number cards (3/4 of the deck) you can simply read them. Ace-S TeD, 2-S aNDy… etc. The only mental adjustment is on the face cards where you read the suit first to give your word.
Full Example:
Two Of Spades is represented by 21
Two = 2, Spades = 1.
21 in my Major PAO is represented by either aNDy if in the person position, kNighTing if in the action position, or a NighTy if in the object position.
King of Diamonds is represented by 47
Diamonds = 4, King = 7.
47 in my Major PAO is represented by either RoCKy if in the person position, RoCKing if in the action position, or a RoCK if in the object position.
My whole list is here if you want to reverse engineer it at all:
Also, some tips on practicing and avoiding a common pitfall I had when I started out: