How do I plan a realistic switch to organic and combine the right scheme, certification and buyer?

Good instinct, most farmers fail not at farming organic but at sequencing the scheme, certificate and buyer wrongly, so plan it as one connected chain. First, do not convert all 8 acres at once, stage it, start with 3 to 4 acres so the rest keeps earning while your organic soil and yields stabilise over the conversion period of about two to three years. Second, get into a scheme through a group, since PKVY and NMNF work on clusters, so either join or form a cluster through your block agriculture office or an FPO to access training, input support and PGS group certification at low cost. Third, decide certification by market, PGS for domestic sales, NPOP only if you have an export or large institutional buyer demanding it, and do not pay for the costlier route without that buyer. Fourth, and most important, line up the buyer before you scale, because certification opens a door but the buyer pays the premium, so start building direct customers, organic stores, processors or an FPO bulk contract during conversion, not after. Fifth, keep strict written input and field records from day one, both to shorten conversion and to pass PGS or NPOP inspection. Run the input cost down by making your own jeevamrit, compost and vermicompost, ideally through cluster or BRC support, so your margin improves even before any premium. Confirm current PKVY, NMNF and PGS or NPOP rates, cluster sizes and fees with your agriculture department and the official portals, since all of these are revised periodically. Done in this order, scheme then certification then buyer, with staged land and good records, your switch is far more likely to actually pay.