Not familiar/w water Sprite but the Wisteria if skipped would reduce the need for nutrients. Many tanks in the low tech part of the forum have no added ferts and
some have a fairly healthy amount of plants in them. I believe the major item involved in calling a tank high tech is injected CO2. Other than that I have not heard any other
ingredient so to speak being called a high tech only item nor have I ever heard of any
specific deffinition. So dirt is not associated with anything but better sub for the plants.
It stands to reason that if all of the plants roots are in something they can get nutrients from, that it would be better for the plant. But you can come close to that by just using a good fert tab which has full nutrients.
But the Java moss and Fern you talked about get ferts from the water normally.
And to further confuse things, I know two people who use sand for the sub and no tabs and have healthy plants from adding ferts to the water.
Fish and shrimp food/waste are plenty enough for a reasonable amount of plants
without adding any extra ferts. Adding them just makes more available to those plants.
A few of the shrimp people don't use ferts to be sure they don't hurt the shrimp.
Some do use them without problems. It is a choice instead of any necessity.
The dirt thing..well a few new people on here have started with it with no major problems so it to is more a choice than anything. Has a couple of problems but none
major other than it does eventually needs to be replaced. But with just a few plants that could be two years. And really instead of replacing it you can just add root tabs. But no I really don't see any large benefit in your tank.
As long as your willing to wait it out till the ammonia stops being leached from it
you should be OK with it. That won't hurt the plants BTW and will assist the cycle.
The plants you get will have some of that bacteria on them and it will transfer to the filter and the ammonia will feed them. Saying that if you use the dirt it will keep you from having to add anything else to do a cycle. One plus in it's favor.
For a long time I just used gravel but a fine type of it. Some mom & pop shops carry it.
This shows how fine it is. Cheap/about $12 for 40-50 LBs at a sand blasting yard.
BTW I just dose two kinds of liquid ferts found in any pet shop that are reasonable priced and have all the nutrients needed by the plants. I dose them each once a week and do monthly 50% water changes because I use these minimal amounts of ferts.