Flamenco guitar notation

I have been trying to notate some flamenco pieces based on notes and handwritten attempts made years ago. There seems to be no standard notation so I have chosen what I find convenient from what others have used and what my music writing software (Lime) has available. The picture shows one simple example. The pause symbol here represents a four-finger rasgueado; the violin up- and down-bow synbols represent strumming with the middle or index finger. Sevillanas copla 1

Another associated problem is producing effective MIDI files. This, after a little experimentation, has not yet been solved to my satisfaction