I am a first time grower but I found a few different recipes that sound good.

50% Peat moss or Coco
30% of compost
10% Pearlite
10% Vermiculite
1/4 cup of limestone per 5 gallons of Peat moss to maintain pH level

if u want to add a boost
1 quart of water mixed with 3ml rhizotonic and some microbe lift (couldnt find out how much but im sure the container says)
this is to help promote root growth during transplant

-Ghost