I have no current knowledge, but when I last did pulldowns I thought a salvo of calls across a range of players was the right approach. Exactly what level will be doable will depend on distance, exact prestige, recruit characteristics other than mere ranking (dont ask, I dont know what they are with any clarity, but it is - was then - clear they do not drop down in numerical order)
Also your ability to SIGN drop downs will depend on what other coaches do, in a dynamic equilibrium, so it is useful to have a range of candidates to pursue