Michell Gyro SE + SME IV upgrade path

I'm spending more and more of my time listening to LPs and thinking of upgrading my turntable.  The system is really starting to jell, but I have neglected the upstream portion of the system as I have focused on improving the downstream portions (amps, cabling, speakers) as well as dedicated power.  

I would like your thoughts on which of the three following paths is the wisest (long-term) course:

1) Upgrade Michell Gyro SE by adding a HR power supply (allowing speed fine tuning and electrical isolation), possibly adding Orbe spider base and platter, rewiring the SME IV (eliminating both the cartridge and SME DIN connections), and adding wall shelf as per the suggestions of the forum;

2) Trading in the Michell Gyro SE and SME for VPI Classic Signature or other non-sprung turntable in the less than $10k range (including arm); or

3) Selling the Michell Gyro and keeping the SME IV (possibly rewired) and replacing it with an SME 10 or 15A.

I'm open to other suggestions.  These are down the road upgrades so listening and comparing are options as the upcoming AXPONA event or at Chicago many hi-fi dealers.

The objective is to get as good as sound as I can from my improving system.  The analogue portion of my system and path is as follows:

1) Michell Gyro SE + SME IV (with VTA adjustment and damping) + Shelter 90X
2) Silver Breeze DIN to RCA
3) Pass Labs X-Ono
4) Audience AU24SE XLR
5) Pass Labs X-1
6) Audience AU24SE XLR
7) Pass Labs XA100.8
8) Audience AU24SE Speaker
9) Magnepan 3.7i plus two DWMs

Audio rack needs to be upgraded as the Salamander Synergy rack could be a more solid foundation.  (Dedicated room and power circuits with hi-fi outlets, Audience PowerChords SE and power conditioner)

Thanks in advance for your thoughts and comments,

Tom