That is a business judgment with an evidentiary consequence. Another profitable quarter may add available earnings but delays the commitment that makes capital qualify; committing early strengthens the at-risk showing while reducing your cushion. Decide against your real operating plan, and document whichever choice you make with dated transfers and agreements.
Sequence the money, then the filing
Work backwards from what the file must show: funds traced, capital committed, premises and equipment arranged, a business ready to operate or credibly about to. Set a date for each of those, and treat the filing date as the point when they are true rather than a target chosen first. No processing time is guaranteed, and a visa's validity period is not the same as the stay recorded on an I-94.
Sign the agreement with the control clauses first, fund the escrow with traced money second, assemble the firm's records and the plan third, then request the consular appointment. The State Department expects funds to be irrevocably committed before it will issue a visa, but an unconditional purchase leaves the buyer exposed if the application fails. A visa-contingent closing, with funds in escrow released on issuance, keeps the investment committed for immigration purposes while protecting the buyer if the visa is refused.