(c) Supporting information including—

(1) Proposed price or total estimated cost for the effort in sufficient detail for meaningful evaluation;

(2) Period of time for which the proposal is valid (a 6-month minimum is suggested);

(3) Type of contract preferred;

(4) Proposed duration of effort;

(5) Brief description of the organization, previous experience, relevant past performance, and facilities to be used;

(6) Other statements, if applicable, about organizational conflicts of interest, security clearances, and environmental impacts; and

(7) The names and telephone numbers of agency technical or other agency points of contact already contacted regarding the proposal.