soil Please help select the right soil ratio

Hi everyone
 
I'd really appreciate some help selecting the right soil for the next growing season. Here is the table that I have to select from:
 
soil.jpg

 
Some details around where/how I'm growing:
  • 30L growbags
  • Outdoors
  • Will have the plants outside from early October but still expecting a bit of rain so gotta be drainable
  • Growing mostly chinenses, the seedlings will be pretty large by the time I'm planting them out
 
My thoughts were to use 50% potting mix with 12 months fertiliser (whatever that fertiliser is), 10% organic compost, 30% large pumice sand and 10% Peat.
 
Does this sound about right? Any help will be greatly appreciated.
 
I use a potting mix like yours at a 40 percent 20 of sand, 30 percent of pearlite and 5 worm casting with 5 crab shell. You can feed by a worm tea with fish emulation hydroized only. Andrew
 
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