From an owner's perspective, your concern is quite valid. However, you need to understand that these are inherent costs for a business, and you must account for them, irrespective of market conditions.
In your case, if you are sure that you will give everyone a basic salary of more than 6500 (because on a basic + DA of more than 6500, PF is optional), you may start hiring. PF registration will still be necessary, but you will have to deposit a nominal amount (Rs. 7/head, probably) for compliance. ESI cannot be avoided.
It's not only PF + ESI. If you are going to appoint so many "Apprentices," that will attract the Apprentice Act. Moreover, it will not exclude you from PF compliance because PF authorities consider the total number of people who put in their attendance, regardless of their categories.
Had I been in your place, I would have adopted a model of outsourcing if I needed to evade PF & ESI.
Outsourcing Model Suggestions
1. Have a Franchise/Freelancing sort of agreement.
2. Allow them to work from home.
3. Work out a minimum fee for all freelancers. Have good software that will keep you updated about the number of hours they log in. Link the fee to the number of hours logged in (equivalent to office hours).
4. Have reports from them on a daily basis.
5. Keep 5 good recruiters, 2 marketing, 1 IT, and 2 Directors as permanent employees. It will keep the number at 10 only. Outsource housekeeping, security, and reception.
6. Have a physical meeting with all freelancers on a weekly or bi-weekly basis.
7. Have stringent target achievement clauses in your agreement.
8. Target experienced recruiters, such as women who couldn't continue due to marriage or maternity leave.
9. You are good to go. Increase/Decrease the size as per your market capture.
Regards