Batch 3.5 questions

Hello Im new to post but not new to the forum. I’ve been researching this site a while, and just bought a motor from this 3.5 batch. I have searched for this info but I’m having trouble finding it.

Besides the batteries what are the possible options for this open ppg v 3/3.5.

For example I heard there were options on prop size as well as motor options. Just wanted to get caught up fully so I make the best choice here. If anyone wouldn’t mind giving me a brief explanation of any and all options they can think of and possibly some details that might help me understand them better.