https://www.healthcare.gov/small-businesses/provide-shop-cov...

I'm assuming you take a salary in addition to your K-1 share. If your co-founder is covered through his wife's plan, he doesn't count against the 70% requirement.

I think you should look into ACA plans. This link might help regarding taxes: http://www.taxact.com/support/715/self-employed-health-insur...

have him / her pick an individual plan and then set up a reimbursement.