On-One Inbred 29" winter ssmtb I won't use

If you're not in a rush:

• 8spd SunRace 11-40 for £15
  
• used 8 speed Shimano trigger shifter for like, £5, at most. Or friction thumby.
  
• 9 speed Shimano MTB derailleur. Maybe Acera as it's only £9 on eBay? Could be shit though, old Deore/XT/etc. if so
  
• cables and chain
  
  

Edit: actually I may be able to send you some of the above, cassette possibly quite worn but a brand new 8-speed chain that I was given for free. Let me check tonight. (it's the remains of my shitty Marin drivetrain)