Looking good - that's VPX vs VP9 for you!
VPinball.com is the better source generally, I'd go there first and only go to VPForums if the table you're after isn't there.
Yeah - 54 to 1 is a bit of a downer, but at least now you're all ready to go and everything is lined up.
My routine for adding is pretty much
Copy table and DB2s to tables folder
Copy Rom to the roms folder
Adjust view
Adjust any settings in the scripts - some have mods/lighting options, some don't
Add table to PinballX
Generate table video for PinballX
Add Wheel Image in for PinballX
Takes 5 or 10 minutes per table once you get it down
Stick on a podcast, grab a beer and you'll be done in a couple of hours
Loading screen is hidden behind PinballX for me, I wouldn't worry to much about that right now - you might even find a reboot does the trick
Eventually I'd recommend enabling ExculsiveFullScreen and playing with the AA settings, although as you're 4K you may not need worry about AA (unlike us 1080p peasants!) but get your tables all dialled in first and have some fun!
If you think SW looks good (it's not bad by any means, but it's years old) wait until you get the really impressive ones, off the top of my head
Flintstones
BK2000
WH20
TOM
TOTAN
IJ (WMS)
ACDC
AFM
All should be on VPinball, and obviously grab the latest ones
There a lots of other good ones but those stand in terms of graphics and physics out in my opinion.