she could have carried loaded with Junkers Ju 88's and their variants
No.
The Luftwaffe never considered the Ju-88 for a variety of reasons. For starters, its big and heavy. It's takeoff weight is roughly 30,000 pounds. By comparison, the TBF Avenger came in around 18,000. That's a lot more weight to throw off a deck.
The wingspan would be a problem too. The Avenger had a 54 foot wingspan while the Ju-88 came in at 65. That might not seem like a big deal but consider this: the
Essex ran with with a 108 foot flight deck (double the wingspan of an Avenger). The
Graf Zepplin would only have had a 98 foot wide flight deck. Instead of having a margin of error of your wingspan the
Graf Zepplin would have had only half the Ju-88's wingspan. That's a recipe for a lot of accidents.
On that note, the Luftwaffe managed something successful practice in landings in something like 1,500 out of 1,800 land tests. 5 out of 6 successful landings is truly abysmal for carrier landings. And that was with the aircraft they went ahead with. The Ju-88 would have been an absolute deathtrap for crews on the plane and the deck crews.