Im going to say the moving up immediately thing is a bad idea even much shot taking when your way underrolled just for 1-2/1-3 and are having some success at those early on...disclaimer: I played 1-2/1-3 way too long/much and am only now mixing in any significant portion of 2-5 so listen to me or dont listen to me but rememeber it's not a race if you want to be doing it for any duration
Also I like that your playing lots of short sessions spread out, this has always been the most lucrative for me as well with the exception of when I do hit a truly good game in which case you shouldn't leave unless something changes.