this is the second revision, I've taken in a lot of advise and this is what i came up with in the end. total: 41 cards.
monsters: 21
3x machina fortress
3x machina gearframe
1x machina force (to sacrifice for fortress)
2x machina peacekeeper
2x scrap recycler
2x green gadget
2x red gadget
2x yellow gadget
1x jinzo
2x cyber dragon
1x cyber valley
spells: 11
3x solidarity
3x smashing ground
1x swords of revealing light
1x lightning vortex
1x mst
1x heavy storm
1x pot of avarice
traps: 9
2x bottomless
3x dimensional prison
1x solemn judgment
1x dust tornado
1x starlight road
1x torrential tribute
monsters: 21
3x machina fortress
3x machina gearframe
1x machina force (to sacrifice for fortress)
2x machina peacekeeper
2x scrap recycler
2x green gadget
2x red gadget
2x yellow gadget
1x jinzo
2x cyber dragon
1x cyber valley
spells: 11
3x solidarity
3x smashing ground
1x swords of revealing light
1x lightning vortex
1x mst
1x heavy storm
1x pot of avarice
traps: 9
2x bottomless
3x dimensional prison
1x solemn judgment
1x dust tornado
1x starlight road
1x torrential tribute