What kind of Miracle grow? They make several types, the moisture control blend is for exterior annuals not houseplants. I can't say about the mentioned soil, never even heard of it.

Something that might be helpful:

Appropriate Medium

From my perspective, an appropriate medium is a medium that allows us
to water to beyond the point of saturation at will, so we're flushing
the dissolved solids (salts) that are present in tapwater and
fertilizer solutions. These dissolved solids are left behind and
accumulate in soils whenever we're forced to water in sips, which is
commonly employed as a strategy in order to avoid the sogginess that
limits root function and wrecks root health. It's important to
realize that a healthy plant is not possible w/o a healthy root
system. If you have established goals that include healthy and
attractive plants, it's critical that you have a plan to avoid the
limitations imposed by over-watering and an accumulation of dissolved
solids (salts) in the soil solution.

Not every grower fully understands the dilemmic issues associated
with inappropriate soils that force the plant to pay a vitality tax
resultant of an unhealthy amount of water being retained for extended
periods when we water correctly – which is to say, when we flush
the soil to limit salt build-up. On one hand, we have the potential
for over-watering, and when we act to avoid it by offering dribs and
drabs of water here and there, we have high salt levels to deal with.
It's easy to see how we all might benefit from use of a soil that
allows us to water so we're flushing away excess salts without
limiting our plant's vitality via waterlogged soils.

Al

To answer the question in the original post, that soil is suitable for Pothos; but as others have said, you can definitely find cheaper options. Adding 50% perlite to most soils is enough for Pothos. Here's the cheapest perlite I could find on Amazon. I bought this myself and it's worked great so far for me! :) https://www.amazon.com/gp/product/B07FGGCWW7/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

I agree w/ those suggesting you make it yourself w/C&S mix & Perlite. It's not just the components, it's their relative size. Even the Perlite in your suggested mix is small, which sort of defeats the purpose of adding it.

Is it Crenda who has that great pic of 50/50 w/ Perlite?

[https://www.houzz.com/discussions/is-this-soil-good-for-succulents-dsvw-vd~4025867?n=25[(https://www.houzz.com/discussions/is-this-soil-good-for-succulents-dsvw-vd~4025867?n=25)

Probably cheaper too, win-win.

ETA: Crenda, trusting you don't mind.

Pothos grows in just about anything! Even water. It's very forgiving.