You can if you want. I used a root riot pod after I germinated the seed. After the roots started coming out of the root riot pod. I put the pod into a 50/50 mix of the two soils you have, happy frog and ocean forest. Then from there I transplanted one more time to a 5 gallon pot of all ocean forest. The ocean forest had enough nutrients in it to last about the fitst 3-4 weeks. I did not use any nutrients until my first week of bloom. Here is a puc of my plants when they were in veg.
View attachment 4887725