Captain : Myself
First Mate : Hancock
Navigator : Nami
Archeologist : Robin
Fighter : Yamato
Look Out : Carrot
Chef : Pudding
Doctor : Reiju + Mansherry
Musician : Black Maria
Freeloader Passenger : Vivi, Rebecca, Hiyori
Freaking Ancient Weapon : Shirahoshi
Yes, i don't need shipwright, sniper, strategist, or whatever role u think is important..
Pirate king is the most happiest guy on the sea..
===EDIT===
Step by step hardcore harem game walkthrough
Step 1: Go to Germa Kingdom with Reiju, and ask Judge to give raid suit No.1-4. Then give it to Rebecca (Red), Vivi (Blue), Pudding (Black), Hiyori (Green).
Step 2: Go to Wano, ask + seduce momonosuke to give ame no habakiri.. Get shisui, and trade enma back for hiyori.. Then train her to fight with oden style with ame no habakiri & enma.
Step 3: Find aokiji, he is wandering alone and he is perv AF.. so with Hancock & Black Maria on the crew we will easily defeat him.. Get his DF, give it to Vivi.
Step 4: Ask pudding to make biggest cake she can, with Reiju add her nastiest poison in the cake, then invite big mom alone.. After she eat it, ambush her with all crew, and let yamato finish big mom with thunder bagua.. get her DF, give it to Nami.
Step 5: Find Kizaru, he is wandering somewhere but with some marine crew, so it should be a lil bit harder than Aokiji, but with current crew strength, he will lose. Get the DF, give it to Hiyori.
Step 6: Go to Sky Island, find enel, finish him, get the DF, give it to Carrot.
Step 7: Go to Marine HQ, use pudding ability + stealth black suit to remove all guard memory, sneak to Akainu, also remove his memory as far as pudding can, finish him, get his DF, give it to Rebecca.