let me think, to start with astartes artificer armour would be nice.
but with a teleporter module, you know, jsut in case., and since we have no god emperor of mankind, instead of a shard of his armour, id incorporate the dagger from the prince of persia in the shoulderpad. rewinds are awsomely usefull. especially since teleporters arent the most subtle of things. ending up 2km under the ground or above it, is not my favourite hobby.
also, id make some more design improvements. like actualy have the thing easy for accessing. i dont havea bunch of servitors to dress me ( their half alive you know.. so no servitors, also, servitors freak me out. ) a nice way to hide the printer would be nice.
and some...fun stuff.. for the girldfriend, you know, to try out (a)
thats for the personal stuff.
after this stuff, simply put: oil. id buy up some far away lind, find an 'oil well' ( a fence so people dont find out about my printer ) and get ludicrously rich. since the printer can also create stuff from games, aplied flobotum rules aply. and id recruit a friend of mine who is into phisics in a big way on a university. ( you need someone to tell you what please NOT to import to make the universe TOO unpredicatbly unstabile.. )
after this, get land, manpower, factories, and unify mankind under my benevolent yet dicatorial reign. create a new religion. after unification, start mankind on a greate 'crusade' across the stars and colonise all the worlds we can find, hey people! breathing and breading space!
this will take about 20 years, then id go and create some dont let me age beyon say, 35 ish thing or cure so i can govern humankind to dominance across the stars XD