Boy, look at that date, I've been away for too long! The 1080 is a MUCH better buy than a "mere" 1010, you did well there. The 1010 is sort of a beefy add-on unit where space is a consideration; its almost a thoughtful "Best of Roland" item for tight budgets, whereas the 1080 is a complete mutha!
I also see Cubasis as being great for beginners. When you're ready for more power, if indeed you ever NEED it, you'll be better prepared because you have Cubasis under your belt already. Don't worry about being underpowered; its a rare listener who would know or CARE what software you used and elitists who value that over the musical results may eat dog jakes. You're well positioned to do a lot as it is. If you can master the power you have with just those two items, you'll KNOW when or if you're ready for more.
I've been happily using a lone Korg 01/Wfd for several years and not one person who has danced to my stuff in clubs has questioned the circuitry over the results. Keep that in mind the next time you're scratching your head over music in general!