Welcome along!
Also check for the Clicky Axle, Skipping Bose CD Player, Dead Clutch - and most of all, make sure its been serviced properly. ask the vendor what type of fuel they use, too (should be super).
The Rev-up engine is not the one with the 7500rpm redline - that is the HR (313), and doesn't have any particular oil consumption issues.
The Rev-up (300) has a redline about 7000rpm (6900?) and some do indeed have oil consumption issues, but by no means all of them. really all you can do when viewing the car is check that the oil level is ok, and that it doesn't look like black treacle.
I think I am right to say that the car you are looking at, if its a 2005 and not a GT4 (which it won't be if its a roadster), is most likely an early model (276), and will have a redline at 6500rpm.
Good luck with the search,
Dave