There are some things I will do differently but after reading this:
when i reserched online and youtube opinions were the 3600x wasnt worth the xtra money so i went 3600
That's the same thing I've been reading, in fact I am finding it really hard to determine why AMD needed a 3600x in the first place.
msi b450 tomahawk max from newegg thru ebay 114.00
ryzen 5 3600 from newegg thru ebey 179.99
gskill ripjawz 3200 two 8 gig sticks from newegg thru ebay 70.00
evga rtx ko 2060 ultra from best buy 309.99
nxzt 510 case from best buy 60.00 came with two fans and i added 2 antec blue fans
all together 733.98 which i think was well spent and not bad at all for rig we built.
Some of the things I would do differently are mostly cosmetic and I will most probably spend a lot more on my case than I need to, but if I have to look at that case for the next few years then I want it to look great from the start.
I really wanted to get an RTX 2070 Super, but starting to think about getting a Power Color 5700XT Red Devil instead now, the RTX card costs 25% but will only return around 8% performance gain, maybe 9% if the game supports DLSS, which right now means just a handful of titles.
Also I will be adding a M.2 SSD now and later adding a larger HDD, something like a 2 to 4TB should be ok. I probably don't even need 2TB.
As for the CPU cooler, I have found a Wraith Prism at a reasonable price, so I ordered that today, it will be much better than the stock and hopefully within a few degrees of your cooler, I won't be overclocking either.
The B550 launch is in a couple of days, I'm hoping that this will give us news of the new XT processors, I am hoping that will give us price drops on existing motherboards including some of the X570 boards, which I think might be worth getting in case I add a more power-hungry CPU in a couple of years as some of the B450 boards don't support the Ryzen 9 processors.
my monitor i got at best buy on moms account 12 months no intrest acer 27 inch gamer 144 refresh borderless it was 329.99 but and its great and its freesync.
I have an ideal specification for my next monitor in mind, I don't know if a monitor exists that meets it, and I know I am a very, very, long way away from getting that. What I want is a 28" 4k IPS monitor, I don't mind running the monitor at 60hz for 4k, I wouldn't be gaming at the resolution, but I do want it to run 1080p at 144hz and 1440p at 120hz, I also want it to be Freesync and have HDR support, so that won't be cheap.