If I assume the exposure times in the table (calculated using B magnitudes and the exposure time calculator) and then assume a 5 minute overhead, the 68 targets can be observed in 17 hours. If I multiply the exposure times by 5, it takes 63 hours. If I multiply by 10, it takes 121 hours.
If I take out the non-HL targets (9 of them ... mostly really faint), then given the criteria above I get 5.5 hours, 8 hours and 11 hours.
Finding Chart website
Slitviewer camera is 2.7' on a side