Hey all - Can someone check these details to see if I have captured everything

On 22JUL I had a cancellation email for our 26JUL BA2562 LHR-DLM, offering me only one alternative option on the same day, BA2660 from LGW which arrives about 7hrs later. This was an Avios redemption and we are a family of 5 travelling. In addition we have all been downgraded from CE to ET in the new flight

Can someone check I have everything here for my claim when I get back

1. Flight delay compensation £350 x 5 = £1,750. Is this correct?
2. Difference in transport costs from LHR to LGW (additional taxi fare)
3. No lounge access now, so any food & drink consumed at the airport
4. NO CE meal, so any onboard Speedbird service consumption
5. Involuntary downgrade - I paid 17,750 x 5 = 88,750 + £125 for this flight. Using the 50% refund rule, I should get a refund of 44,375 + £62.50. Is this correct?

Have I missed anything?