New TT vs Cartridge/isolation upgrade

Suppose you do not want to add weight on your platter, i.e. the Luxman Motor lifts the platter to reduce bearing wear.

These rubber gizmos hold reels on tape recorders. They are the same diameter as the TT platter spindle

You press them down, they stay holding the center and pull off easily when done.

you want one’s with flexibility, not dried out that have become rigid/brittle.

Above just for a visual example.

To actually try and answer the OP's question. Keep your current table for now. If you have a phono preamp that can do Moving Coil, the Hana is a nice option. If not, look to the Sumiko or Nagaoka carts.

That Ortofon Red is your issue, it's not that special, especially for what they charge. The one nice thing you could do, and save yourself a couple of bucks, is just to upgrade the stylus to their Blue or Bronze since the "engine" is the same.
 

The Bronze engine is different…it uses silver plated wire, and the cost difference is trivial between stylus and cartridge, so get the whole Bronze. I too recommend keeping the RPM1 and addressing you upgrade itch with a cartridge. For under $500, the Bronze is where I’d go. The “Clever Clamp” is another record clamp suitable for your Table. 
https://elusivedisc.com/clearaudio-clever-record-clamp/
for isolation and leveling: a set of 3 Funk Firm Boing feet should screw into the threads used by Pro-Ject for the stock feet  

+1 @elliottbnewcombjr, thanks

I’d be careful with footers and isolation platforms especially when it comes to turntables. It’s very easy to make things worse.
I suggest you focus on phono stage and cartridge. The Hana E series is very good as long as it matches with your table and your phono stage isn’t a bottleneck.