That's awesome, I knew you could to it!!
The best way to do floats is to weave them in (catch the yarn), I like to do every 3rd st but I know some will go to the 4th st. Check out Amy's Stranded video
Also the link I posted in the first post about knitting with both hands she also shows you how to weave in the st
If you leave long floats I find it can throw your tension off and show puckering...but also things can get caught in the floats for like gloves or mittens...