12oz and 16oz or just a14oz?

I'm fairly new to boxing, started about two months ago. I've been doing some research on different brands and style of gloves. I'm having trouble on figuring out what to buy.

I'm considering getting a 12oz pair for Bagwork and 16oz for Sparring. Also thought maybe I should save and just get a really good quality 14oz for both, or just stick with the 12oz and get sparring gloves when I need them.

I also learned that you should choose a pair of gloves based on weight class. I'm currently 198, but my coach wants me down to 175, if that changes anything.

Looking for a pair of lace, leather gloves with flexibility, that aren't stiff and have a nice soft pillowy cushion. Anything a little under $200 and below is fine.

Thank you. All feedback is welcomed.