Apple iPad Pro early model A1652 And the Apple Pencil

I bought my iPad Pro early on When it was first Released. It has the model number printed as A1652 on the back and I spent like $1100. I am now considering an Apple Pencil. Is the Apple Pencil 2 appropriate or do I need to buy the Apple Pencil 1? Of course based on the reviews I’d rather have the generation 2 pencil? my Apple iPad Pro is still phenomenal so I have no intention to replace it yet because of the current cost of the better models. Will it work? It is my understanding that charging is more of a challenge with the older iPad Pro. But others say no problem. I want to buy immediately. Please respond. Thank you