Rega Planar 3 upgrades help.

I'm thinking you want to brag about the fantastic deal you made, and in that light, I want to be the first to congratulate you.

Lol. Actually I did not know I had a deal until I got home and search for the legacy behind this TT. I found it in audiomart and I drove one hour outside the city to get it last Sunday. The owner did not want to ship it so that worked on my benefit. I am really excited now in bringing this TT to a different level of performance.
Thanks.

When I had a Rega, mine improved when put on Cadas blocks (2 in front and 1 in back) to eliminate the factory installed feet. 

Tangospinner has upgrades that are well made and affordable. Check him out on ebay or Google him directly.

Go to vinylengine.com and get all the info about Rega tweaking.

I had a P5 years ago and found the subplatter and belt the best bang for the buck upgrade. I did find speed noticeably faster(even with the optional power supply)which was one of the things that wore me down to invest in a more substantial table.

Hindsight, all the other mods I did where a waste of money if you are more than a casual listener. 
All the Rega tables are great for what they are and the upgrade thing becomes a slippery slope after addressing the subplatter issue IMO. You may find-wow, if the subplatter made such a difference, what if I change the...???$$$$
Since you got the table for cheap, investing a few bucks may be worthwhile. I would leave the glass platter alone, as it contributes to the Rega "sound" and look for a real cork mat and maybe replace the rubber band suspended motor with the upgrade as well. 

Another consideration, invest as much as you can in a phono stage to hear what the the table is capable of if you don't already have a decent one. Happy listening!