Just picked up a Fostex R8-what's next?

Fostex R8 + MPTAV + 3 reels Ampex 456 + Demagnetizer

Fostex R8 - The 8-Track Take-Away (SOS Jan 89)

What mixer should I get for less than 350 for this Fostex A8? (for instrument recording) : r/ReelToReel

FULL Tracking Session w/the Fostex R8 Reel to Reel

Fostex R8 4khz buzz sound

Fostex R8 - The 8-Track Take-Away (SOS Jan 89)

MZE-Electroarts Entertainment - : Dr. ZEE WORKSHOP FOSTEX R8 Analog Reel-To-Reel multi-track Tape Recorder

Fostex R8 - The 8-Track Take-Away (SOS Jan 89)

FULL Tracking Session w/the Fostex R8 Reel to Reel