Seeking advice on Polyprinter print quality

I’ve got a couple files I want to print in ABS at the space since my home printer is still lacking a shroud and vent system, on top of being slower.
Basically, I’d like any advice on getting as good a surface quality I can on the polyprinters so I can get these files done and on to sanding and painting. Here’s an img of what I’m looking to print:
Cobra Psychogun
I’m hoping to get the barrel part smoothed down to a mirror shine since I’m going to attempt a technique for a mock chrome finish. The larger pieces will be done in a sparkly purplish blue with a layer of automotive clear coat. Kinda like this:

Hello,
First off do you have you completed the online training for 3d fab area? That is required to gain access to access the PolyPrinter so you can send your print. If you are doing sanding afterward and slice with great precision than might be fine. However for best results I would use the Bambu printers. Bambu does require an in person training and they are posted on the calendar.

I’m trained on both, been trained on the polyprinters for a few years, so I was wanting to stick with what’s familiar, but never had to make anything particularly clean since I mostly print little replacement parts for this and that.
But if the bambu is gonna be the path of least resistance I’ll just go with that. Thank you!