Retro MTB bits: Seatpost, quill adapter, stem and risers

Help me get my new retro mtb and recycle components!

Shopping list:

1. Seatpost, can't work out the exact size but going to assume 25.0 mm as its a 90s era MTB ( and based on @t0-ster's post here . I can always shim it if its too small. Any colour condition so long as it can fit a normal modern saddle rail.
   
2. Quill stem adaptor, 21.1 or 22.1 and I'll file it down (again based on @t0-ster 's post). Same, no preference on colour or condition, just functional!
   
3. Handlebars & stem. Current set up (see photo) is too short so maybe something abut 80mm and bars, anything with abit of rise to them compared to the pan flat ones I have. Something to get me going so I can work out what I'd like from there.
   
4. SJS canti rack
   
   

Postage to Falkirk or in the unlikely event you're local (within restriction travelling) will happily collect.

Thanks!

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