Hello Matt,
The relevance of the The Super Emeraude to IFR will be related to what navigation and radio equipment it carries rather than the type. There's no reason I know of that stops you getting airborne in a bathtub so long as it can navigate according to the rules. As for whether it's a suitable mount for IFR work is down to your abilities and the work load you're able to cope with. I don't know how much IFR work you've done but single crew instrument flying with no autopilot can provide an extremenly high workload in something as benign as a spam can never mind a responsive and agile type like yours.
Whilst you say you don't want to operate in marginal conditions, that isn't the main issue. Even if your departure and destination weather are good any en route weather that provides heavy convection or icing will stop you operating. Why convection? Because even an 'enthusiastic' bit of towering cumulus will see you with the throttle closed and nose pointing down just trying to maintain the required +/-200' allowed inside Class D/A airspace. Throw in a frequency and squawk change whilst you're fighting the controls and you'll wish you'd installed a two axis autopilot.
If you have a Single Crew/Single Engined IR and your aircraft is suitably equipped then there's no reason your Emeraude cannot operate IFR and fly an ILS down to 200' and 800 mtrs but if you're planning on flying airways you need something or someone else to help with the workload. If you're working on an IR(R) then you'll be limited to 1500mtrs on most approaches.