Preamp for a Line Magnetic i518?


I am interested in adding a preamp to my system. Currently using a Line Magnetic 518 integrated 845 SET. I listen mostly to vinyl with a Chinook phono amp and VPI Prime turntable with Lyra Delos. Speakers are PSB Imagine T3. Any thoughts on adding a preamp and suggestions? Partial to tubes but let me know if there is any ss that would possibly be a better match? Budget approx $3500. I appreciate any/all advice....thanks.
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Wanted to bump this up as I have a Line Magnetic 805ia and am considering adding a separate preamp as well. I have considered a few but based on reading, these are intriguing: 

  • PS Audio BHK Preamp
  • Audio Research LS27 Preamp
  • Don Sachs Model 2 Preamp
  • Melody PB101 Preamp
  • Modwright LS100 Preamp
  • Luxman C700 or C900 Preamp

Does anyone have any experience pairing these preamps up with their tube amps? Would love to hear your thoughts. 
Freesole, I I will let you know about the LM 518 and ps audio bhk combo in a a week or so. I just got the LM and am letting it settle in without adding the pre for a minute 
@akiravelvet awesome, congrats and enjoy! Would love to hear your thoughts when you can share them. 
@ozzy62 That's a legit question. Both the 518 and 508 don't really pass the preamp section, so isn't adding another PREAMP just adding more stuff into the signal chain?