Well you can expect cruise around 175 kts on an 0-320.. Like I said though, a tight fit. Mechs who have worked on my plane wonder how I can even get in and out of it.
Print out the list of SBs (LG side brace) from Glasair's website that apply to the I RG. Compare them to the logs of the aircraft to make sure it complies. Outside of that, check the usual stuff. There really shouldn't be any external issues with the fiberglass. The aircraft is made in halves so there's no laying up process like say a Long EZE.
It's a nimble, fast, aerobatic plane that's great for someone single or married with no kids.