I tend to disagree with the seeds, yes premium genetics are great but bagseed's from a nice bag of smoke will produce good results. It all depends on who you are and what you are expecting.
as far as soil goes. FFoF soil is extremely expensive as well as over rated, yes it is great soil. but you can get a soil that is just as rich if not richer in organic nutrition as FFoF for a fraction of the price. which is really important when your planting in 5/10 gal pots or using alot of soil, if a bag of FFOF can last you a few grows i say go for it but if your going to be looking at buying multiple bags @ 20$ a bag each grow i say look into building your own soil. I do agree to stay away from an pre nutrient laden soils they are just a hassle but you can go with a good quality pro mix that cost the same for 4 cu yards as a 1 cu yard bag of FFOF soil goes for, then pick up a few ammendments and you get 4 cu yards of good quality soil for the cost of 2 cu yards of FFoF soil.
to me growing is all about saving money on buying it so to save money where you can is important aspect of this hobby. if you can afford good quality genetics then i say go for it but if a 60-100$ seed order is not in your budget one can get desirable results from a few bagseed from some decent quality bud.