Dust Collection System Design Workflow - Revit vs Inventor vs Plant 3D

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Hello all!

I've been using Inventor for the past 4 years for various projects (from complete plant layouts to custom machinery parts). I've recently changed jobs and now design Dust Collection systems. We mostly integrate existing equipment from our suppliers and draw the piping network. We design custom hoods, support brackets and small structures. I've also modeled our piping to be used with Tube & Pipe. Point clouds are also used once in a while. 

We generally make plans for our construction teams and sometimes for external teams which require different LOD. 

We recently entered in a big project that uses ACC to coordinate multiple contractors and the experience has been pretty rough with Inventor (importing the different Revit models we require (structural, process and HVAC), exporting everything back to Revit to upload to ACC). Even with simplification beforehand in Revit, the models are really large for Inventor making loading and saving times a total waste of time.

I am questioning our workflow with Inventor. Should we be using Revit to do our equipment layout and piping which could be used easily in ACC with lower LOD? As for the custom parts, they could be modeled in Inventor and exported to Revit? I know Revit also has calculation tools for sizing ductwork which I feel would be added value to confirm our sales team's designs. 

I also know Plant 3D has a piping module but unsure of it's pertinence. 

TLDR; we model everything in Inventor at the moment for Dust Collection systems (equipment layout, piping, custom hoods and support brackets) and I am questioning this workflow as we are experiencing slowdowns in large assemblies and coordination with ACC. Considering Revit, but unsure on how to use it effectively. 

Hoping someone will have had similar experience and can guide me on how to effectively use all these expensive pieces of hardware. 

Cheers!