Hello!! We're in WDW from May 14-20 and staying at AKL. It's our first time back since 2017 and I'm ridiculously excited, although so nervous about how much this trip will cost

Our DS is now 11 so paying adult prices for him is going to give me sticker shock every time we're at a TS, especially as the Dining Plan is no longer available and helped "hide" these costs
Pending ADRs and EEH schedule, our plan is this:
Sun - arrive at 10am at MCO; go to AK: dinner @ Boma
Mon - EP + EEH: lunch or dinner at Space 220 and then planning on doing F&G booths for snacks and the other meal*
Tue - DHS: lunch or dinner at Sci Fi **
Wed - MK: Uber to AKL for pool/rest in the afternoon; dinner at Storybook Dining; return to MK around 6 or 7pm for EEH***
Thu - AK: rest in the morning; do QS for lunch and dinner
Fri - DHS: dinner at Sebastian's Bistro and then return to DHS
Sat - MK: leave around 2pm; 3pm lunch @ Sanaa; Uber to MCO @ 5pm (our flight's at 8pm to

and we're planning only brining carry-on luggage so hoping this is enough time!)
I'm hoping you can help me with this plan!
* How long are lines at the F&G booths? As it's our only day, I don't want my DH, DS (11), and DD (7) irritated at me if we're just in lines. I'm planning on doing
Genie+ to help with minimizing lines in the park
**Is the Fantasmic package worth the extra cost? Are there long lines to Fantasmic in May? I remember the portions were large in WDW, and I don't think my DH, DS,
and I each need an appetizer and main dish, but I also don't want to be in line for Fantasmic for 2 hours to get a decent seat...
***Is this too ambitious of a plan? We can take an Uber to cut down on commute/wait time if needed from MK to AKL, and AKL to WL. This would be the only character dining (my kids are pretty shy, and my DS wouldn't like dining with too many princesses, but it think they would like Storybook Dining)
Thank you for your wisdom and help!!!! This forum is the best!!