Agreed with starting with a simple brew and working your way up from there. Maybe something you can repeat a few times to dial in your process. If it's overly hoppy or dark/roasty, it may hide off flavors in your final beer that could help you determine what parts of your process need tweaking/revision.
I might even recommend starting with a $10 plastic fermenting bucket for your first few batches until you learn what features you want in a fermenter. The brew bucket look nice, but lacks some features that other fermenters in that same price range have (yeast collection, pressure transfers, etc.). If I could go back and respend the first $200 I spent on brewing equipment, I would buy very different things than I got the first time around.
The important parts of this process are cleaning/sanitation and temperature control, just like everyone says
I started brewing last year and went straight to all grain, and I regret not starting with extract. Like anything else there's a learning curve, and I feel like I forced myself to go too steep too fast and my first dozen brews were lacking because of it. Same with bottling/kegging. Bottling is simpler in concept and requires less expensive equipment, but takes more time and patience. I'm just now looking into a kegging and dispensing system and have only bottled so far.
Get your large pot for heating sparge water, but maybe do a few extract batches with a plastic bucket fermenter until you really nail down the sanitation, boiling/cooling process, yeast health, and fermentation aspects. Just my two cents. You're gonna love brewing no matter what equipment you buy
and welcome!