Alan there are three critical things that you should put into your IFR RV-10 panel. A glass moving map duel screen, a good autopilot, and onboard weather.
I have a GRT three screen system with graphics engine montior, PFD, and GPS moving map with WX weather overlay up all the time, with a trutrak autopilot and it is wonderful for IFR. Naturally you also need backups but that is true even in a Cessna.
I backed up my electrical with an SD-8 engine driven alternator but some have gone with small in cockpit battery backups and/or two batterys.
I flying my RV-10 in some really hard IFR working my way around some pretty good cells while IFR in moderiate rain I can say that flying IFR in my RV-10 as set up is so much less stressful than flying IFR in my Cessna 182. Lots safer also as I don't have to depend on ATC to route me around the weather.
I good lesson about flying IFR without on board weather is Scott Crossfield's last flight on an IFR flight plan and his Cessna ending up broken apart in flight.