Ok...
1 and 3: combine the shins and the knees to make a full pair of greaves. Lots more comfortable and far more practical than seperated pieces.
http://www.google.com/images?q=greaves&oe=utf-8&rls=org.mozilla:en-US:official&client=firefox-a&um=1&ie=UTF-8&source=og&sa=N&hl=en&tab=wi&biw=1440&bih=707
Get a round plastic trash can, trace your design, cut it out, form it up, add straps, paint, and go!
2: ...no idea...mando armour and MOLLE have never been friends it seems...
4: Attach them around the top straps of your MOLLE rig. sticky backed velcro.
5: go with actual plates on the boots. like so:
http://www.facebook.com/home.php?#!/photo.php?pid=30690439&fbid=1299240246544&op=2&o=global&view=global&subj=1477662302&id=1396557142
It's really simple to make, then you just run a strap to your greave and another under your boot (use elastic) and it stays on perfectly.
You can do this ner vod! OYA!!!
