I have a Linn LP12, and I do not plan to change it. I bought the LP12 with the Lingo power supply, the Cirkus bearing, the Trampoline suspention, Ittok arm, and a VH Grasshoper. In addition, recently I had the dealer install an XLO Signature phono cable. Next setep will be a Graham arm with the Graham arm base.
I do not know if you can afford these modifications, but you may start slowly, first with the Lingo, then the Cirkus and, last, the Trampoline. Perhaps your local dealer can offer you a discount if you install more than one mod at a time.
Happy listening.