Need to make a hearing change.

I have slightly older 11sp sram drivetrain really want some taller gearing for the climbing in my area. Does anyone have real experience with Sunrace cassettes? I’d like to dump my old and worn 10-42 X11 XD drive for this one as it’s 1/3 the cost and seems to be only about 150ish grams heavier.

In addition or instead of this, I’m also looking at a 30T front ring in place of the 32T. Is this going to be more beneficial if I only change the front ring?

I do understand that if I make these changes, I should be adding a new chain to the shopping list, and maybe new derailleur pulleys.