Bronze nub with (probably s^%$#)innovative nasus idea

So my favorite champions are singed and nasus. my singed build is basically rylais and liandries then full tank. building more ap barely even increases damage output compared to those items. i also play nasus and ap nasus is troll af. yes. i was thinking though what about a nasus with rylais and liandries then full tank. or tankiness with those items built in sometime over the game. he has too aoe dot abilities that i think would actually synergize pretty well with. his ultimate which does dot aoe max health that coverts into ad(if the current health damage from liandries was added omg, doubt it) and his e armor reduciton spell which is aoe dot. rylais and liandries also add health. im not talking about any other ap items though. just wondering cuz those items are very good when combined with aoe dot spells especially ones with bigger aoes which e and ult both have decent aoe. so maybe final build like rylais liandries, ice gauntlet, spirit visage, (frozen heart and mr or armor boots) or ( with another tank item with cd boots) idk what yall think

edit: so i think it would basicehally be a n asus build with no randuins/deadmans/banshees/heavy health item tht also includes resistances. but still achieves tankiness and resistances. also i think the aoe slow in itself would add amazing utility to the kit even if not including liandries with it. after reviewing responses i definately think building cdr first for faster stacking and damage output would definately be the way to go so these items (rylais,liandries) would be final items or late mid game items at best. question though aswell. in a lane that you are struggling in would building rylais or liandries component help u gain some lane presence to make stacking easier. like just a 435 ap book(idk name) or the 850 ap rod?