No problem - sometimes it is better just to try to keep things as simple as possible, so you get to spend more time actually reading your books
Sweetpea had a valid technical reason for really needing to wind their titles down to a minimum, but that should not be an issue you have with a Kindle touch. I recommend just try to stay mainstream as long as you can - get your title/series so it works with metadata downloads, and as you mentioned just special case any particularly long title names only when you really need to. The less time faffing around the better
