I shrunk the object to 605 of its size and ran the job; taking near 11 hours in total. Its a lovely finish on the top edge of the curves the undersides are a little more gritty but nothing a sand and laquer wont resolve. Ideally we would love to use these as trophies for a Hack Festival we are running demonstrating the 4 Pillars of STEM producing ART. ( STEAM ) .
4 Shells, Black PLA ; theres a tendency for the base to lift and grind on the first few passes but I put that down to filament that had been sitting around not being in use. at 60% size it took a little over 11 hours to complete and I would suggest you hang around at hours 1 , and at hour 8 as there was a very clear moment where the cooling plastic was pulling a little more on the model. but it did not need interfering with .
Well done SteedMaker its a great example of modelling and printing.