These are the same documents shown to every prospect: the prep requirements, the session agenda, the decision discipline, and the full architecture of a finished UVP with the cells empty.
At your scale, work them yourself. Put your leadership team in a room with the prep sheet’s artifact list actually gathered, hold the decision rules, and fill what you can. You will get further than you expect, and where you stall will tell you something useful: the stalls are where a room with an outside operator forcing the decision earns its keep.
That is what the paid engagement adds — not the structure, which you now have, but the day that fills it: three voices that disagree, evidence on the table, and a decision by close of business. When the cost of unclear positioning is plainly larger than the cost of fixing it, that is the time to do it properly.