my first conversion was a pacific chameleon wit mesh heads, but due to shortage of some items i decided to mount my piezo triggers like Ddrum redshots (juz pasted on the heads)
cons---- it didnt trigger well, lots of false trigerring
pros---- fast and easy to set up.
buyin piezos/buzzers from sim lim tower is cheaper den getting roland triggers.
and it has more room for customization (single zone/dual zone)
hi hats and cymbals are the same as well, ive been scouting ard for cheap plastic practice cymbals, but shops usually sell them with the practice pads, not individually. u can also use cheap cymbals, but some work is required to mute the sound and dampen the resonation.
hihats depends on yer preference. i have succesfully converted an acoustic hihat stand with my old DM5. the dm5 hihat controller juz needed an on/off switch(open/closed sounds) unlike roland which uses some potentiometers for its open/closed and in between sounds.