Setup & Transfer
These support pages should get you started with setup of your new iPad - and the methods of transferring your data from old to new iPad:
Set up your iPhone, iPad or iPod touch – Apple Support
Transfer data from your previous iOS device to your new iPhone, iPad, or iPod touch - Apple Support
Use Quick Start to transfer data to a new iPhone, iPad or iPod touch – Apple Support
If the donor iPad, from which you are transferring your data precedes iOS12.4, QuickStart will not be available.
“Transfer” is rather a misnomer. In reality, your data and setup is merely cloned to the new device. Nothing is moved or removed from the original device.
An alternative is to restore either an iCloud or iTunes backup to the new device:
How to back up your iPhone, iPad and iPod touch – Apple Support
Restore your iPhone, iPad, or iPod touch from a backup - Apple Support
Apps are not directly transferred between devices. For Apps, the transfer process creates a record of the Apps that are installed on the donor iPad - and it is this record of installed Apps that is transferred to the target (new) device. For Apps that are still available for download from the App Store, the corresponding Apps are automatically downloaded and installed from the App Store.
Charging
The majority of recent iPad models are now supplied with a 20W USB-C Power Adapter - this being adequate in most cases to charge your iPad at its fastest supported charging rate.
The actual time required to fully charge the battery is not an absolute. Many variables will affect the actual charging time - such as the initial state of battery charge, temperature, and whether or not the iPad is being used for CPU and graphics intensive tasks while charging. The battery charging rate is also reduced while the battery is charging above 80% - this charging strategy being intended to reduce heating of the battery and protect it from damage.
In general terms, in optimum conditions you might reasonably anticipate your iPad charging from fully discharged to ~80% in two to three hours; charging 80-100% may take a further one to two hours.