Of Individual Rights

the poorer debtors and farmers

(I'm 90% sure about this one...)

Why did Antifederalists oppose Alexander Hamilton's plan

There were several antifederalists. Jefferson was considered the leading antifederalist. Other antifederalists include Patrick Henry and George Mason. Antifederalists opposed the constitution.

The most notable antifederalist from Virginia is Patrick Henry. Henry was invited to the Continental Congress but opted out in order to fight the new Constitution from the outside. Other antifederalists from Virginia include George Mason, a drafter of the Bill of Rights and Richard Henry Lee, drafter of the Declaration and a later Senator.