So, OP, try it anyways, what have you got to lose? Then report back, please.
I can recall my own experience with a 3rd gen iPod Touch that was at near 100% capacity, and I had horrible/similar bad behavior to the point I had to go to the Genius Bar for a fix. The fix was to start all over from scratch! Some fix. Never knew the offending culprit, but I purposely did not come close to filling the thing up after that, nor did I install every app that had been there in the first place. So was it an ill-mannered app causing the problem or overuse of storage? I do not know.
From my many years as a senior level network dweeb, sometimes the sensible and known is outgunned by the ill-conceived and undocumented.
Or are these iPads doomed to poor design? 2GB, 3GB RAM needed for 64-bit? Hmmm? Poor "non-conforming" applications??
It's something! There's always a root cause....