Check out the archives on the Audio Technica ART9, definitely a cart to include in your decision. Easily a "best" cart in the $1K price point that exceeds it's cost.
VPI Classic user here- I'd hold out on a table upgrade until your ready to go up the food chain considerably $$. I would maybe consider the Phoenix Roaddrunner setup now sold by SOTA for speed regulation. Look for a 3D arm used for 1/2 the retail if you're arm curious after the cart upgrade.
Your Prime Scout has enough VPI essentials to appreciate what a decent setup will do. Other than cart, upgrades are in the diminishing returns zone-IMO.
If I were going to consider a VPI as the "final" I would get an Avenger or HW 40DD. Likely, I'll replace my Classic with something outside the VPI lineup.
PL HP is powering my setup. Enjoy your setup.