Ah, I see we have a genius on this thread! Thank you so much, that makes it easy!! I have 3cf of peat moss and approximately 1 cf of Sphagnum Moss in my cart. They have orchid potting mix here but it has fertilizer in it so I will get the stuff from Ace. I agree it's definitely better to have too much rather than too little! And I can always return anything extra.
Checking out now then heading to Ace then a local hardware store.