I'd also like to go off grid (not a likelyhood for a while here) - but an inverter shouldn't draw more real power in DC than the real power output + 10% (or whatever efficiency the inverter is rated at) - it just won't be able to supply more VA than it's rated for.
This sums up Osram Sylvania's position nicely:
http://ceolas.net/Docs/Sylvania_on_CFL_Power_Factor.pdf
apparently .6 for a cheap electronic is much better than your average magnetic ballast with .25. not everything is worth the spend for high power factor.
This shows some power factor correction with capacitors:
http://www.ecospecifier.com/media/72...t%20Lights.pdf