if you configure properly the powersnap it works ok most of the times:) kingcon is an alternative to the standard amiga os shell that you can find in drawer system. shell is a kind of ms-dos (bad words i know...) if you know from pc world. mcx is a commodity. commodities are tools that run at boot time from wbstartup drawer and they adding more functionality to the amiga os. it's something like ''extra tricks''. powersnap is a commodity too. now, mcx is a multi-commodity, that means it can handle-add more than one tricks at boot time but personaly i believe that mcp is better than mcx. download them from aminet both, read carrefully the guides and decide your self what of the tricks you wand and what don't. :-)
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i see that you have a ''heavy equipment'' :-)