Chicago, huh? Hi Neighbor. I am North of you about 5 hours...
for storage, I use extra large airtight containers made by Ziplock (60qt size) - they have 6 locking latches around the top
look around for them - we got ours at the local walmart for about $24 or so... there are also smaller versions with 4 latches - 44qt size.
the 60 qt will hold a dozen spools easily. I also use Damp-Rid desiccant to absorb any moisture that might be present - works quite well and is readily available just about everywhere.
starting with PLA is a good idea... much more forgiving - especially on an open frame printer like the Prusa. PETG is another good alternative - prints pretty easily, like PLA, but stronger - altho not as durable as ABS... both PLA and PETG will shatter if dropped on hard surfaces. ABS wont.
all that said, better than 90% of my printing is done in ABS. I just like the way it prints, the durability of it, and the options for smoothing prints...
as for the "who knows" part... LOL - it is kind of an addiction... we got the 1st SD4 in February 2015 - now have 2 of those, the FT Prusa and the FT Kossel... and hoping to add to the collection soon.
SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1