Budget Metalwork Colossus Combo (Standard)

This is more or less your standard (no pun intended) Metalwork Colossus build, but instead of the only win condition being to attack with some combination of Metalwork Colossus, Elder Deep-Fiend, and Skysovereign, Consul Flagship there's also a combo win for the long game. I'm looking for suggestions to make it a little more consistent. I included some thoughts in the "Maybeboard" section, such as testing out replacing Renegade Map with Anticipate or some combination of Inspiring Statuary, Merchant's Dockhand, and Metallic Rebuke, but I'm not 100% certain what will work best. Let me know what you would suggest in the discussion tab please.

The combo, as it currently stands, is...

The combo engine:

1x Metalwork Colossus in the graveyard + 1x Metalwork Colossus on the battlefield + 1x Efficient Construction on the battlefield (+ any combination of non-creature artifacts with a combined CMC of 11 or more - it is after all a Metalwork Colossus deck)

The win conditions:
(combo engine plus...)

1x Aetherflux Reservoir (each time you cast Metalwork Colossus for free the spell count ticks up and...)
1x Efficient Construction (in addition to the one from the engine) + 1x Gonti's Aether Heart (make a few thousand thopters, get a LOT of energy, take an extra turn and swing in)

I'm hoping that the consistency can be improved a little, it's just figuring out where to fit those improvements in without diminishing the artifact count too much, which would prevent the Colossus from playing for free.