Build feedback and suggestions

Hi, bronze 3 Rengar main still going through a full build idea.

Got midgame and early sorted but beyond the 4th item I have no clue

It goes like this

Starter:

First item set: (generally I heal through damage at this point)

Next:

Midgame-ish: (this is the build I snowball off, I get max stacks multiple times in any given fight now and I can spend one on a heal)

Midgame (11-14):

Then I am kinda lost at this point, I could snowball off crits and go for a pd into infinity edge but that is very costly and requires me to be ahead with at least one other fed team member so getting shutdown isn't costing us the game.

Rush into spirit visage and one more ad item?

Maw or go cleaver for bruiser damage?

Hell I have even built Bortk lol. Anyways pro's, con's and advice would be fantastic!