It took about two hours earlier today but I did the lv1 clear calculations for Gromp Solo starting Q, with masteries granting 10% cdr and 3% spell vamp/ life steal. Runes being 3 Quints of spell vamp, 9 glyphs of cdr, 9 seals of health, and 9 marks of health. Mordekaiser starts Gromp (solo) with machete and 4 pots. Has 658.23 hp at lv1. Smites Gromp, and from health gen from all sources (including shield) goes negative 26.27 hps (after resistance calculations) while dealing 83.62 dps (again after resistances) to Gromp who has 1210 after smite. Camp lasts 14.46 seconds, Mordekaiser net loses 379.86 hp, still has 278.36 health without using any pots.
That alone makes me think the clears can be made simple with the 17.76 cdr and 9% spell vamp and 3% life steal. As to which jungle item to use, I think im going to have to try them in game due to all the different variables.