Seeing as this is a low budget KM deck, i would suggest you narrow your monster types. For starters, take out KM Beetle, speeder, and ghoulungulate. Discarding an iron core to keep them on the field is to hard to maintain. A good type of KM deck is one that has a small range of monster types. Since your monster type majority is rock. Just add in rock beatdown creatures like gigantes or jujitsu master. They are excellent reveal targets for Guardian and sandman.
For your spells.
-1 Iron Core Armor
+1 Mystical space typhoon.
Your trap lineup is pretty good. I would suggest you lose the core blast though and add in something simpler like d-prison or another reckoned power.
And until you get KM urknight, I would take out crusader all together.