If your iPad needs are that modest, you do not need a very expensive iPad Pro or the 2019 iPad Air 3.
Save your money.
You can easily just purchase the new 2019, 10.2 inch screen iPad 7th generation.
It has a 1/2 inch larger screen on the diagonal.
The 7th gen iPad is much more powerful then your 6-year old, 1st gen iPad Air.
It has a faster CPU and internally has triple the internal RAM.
Get the largest storage version you can afford.
It is, also, compatible with the 1st gen Apple Pencil, if you ever want to use one.
My wife, currently, has and is using a nearly 8-year old, early 2012 iPad 3rd generation.
I am getting her a new 2019, 10.2. inch screen, WiFi ONLY iPad 7th gen 128 GBs storage model by the end of January.
The 2019, 10.2 inch screen iPad 7th gen iPad will be a HUGE iPad upgrade for her and she should be quite happy with it for, at least, the next 3-4 years!.
The 2019, 10.2 inch screen, 7th gen iPad should be a huge iPad upgrade from your current iPad Air model, too!
The 32 GBs WiFi ONLY model sells for $329 U.S.D..
The 128 GBs WiFi ONLY model sells for $429 U.S.D..