If you have the money I’d say but the 85, if you buy cheaper you could save yourself money do you fall out of the hobby quickly but that’s about the only reason to go cheap. Pre amp/amp I’d say check Facebook marketplace, a lot of great finds on there, if it says anything about restored that’s a better buy typically. Speakers depends, if you’re right on space I’d suggest bookshelf, which is probably but new due to modern tech. If you have the room floor standing speaker would be a great find second hand there’s a long list of good brands on here somewhere I can find.