So what kind of file size, on average, per cache are you looking at with this method? I'd imagine it's quite a bit larger the text PDB file for cachemate. Just curious.
That is very similar to what I do with my Palm TX, and Garmin E-Trex combo. I like EasyGPS better than GSAK though just because its easier, but GSAK will auto-rename the caches going to the gps, instead of the GC.com waypoint names it changes it to what it thinks would be easier for you to find. pretty handy, but somethimes ya go HUH?!! haha
As far as the average file size, it all depends on how many quaries you have, I dont even use my SD card for caches, they are small enough to go in the main memory.
between cachemate and the plucker combo thing, I prefer cachemate over all. I heard it best described as coke to pepsi, it personal preferance. try them both. What I like best about cachemate is being able to sort all my caches by found, not found, and user created ones, and then file it as found when I find it. The only thing missing are the pictures if any from the original website (if I remember, you can do that with the plucker combo) cachemate is just one less step and no pics.
hope all that rambling helps!