Joyce Koo recommended a dry box.  I agree that that is recommended, especially for short term use such as you've used some of the components and you will use the rest in a few days to a few weeks.  However, if you need longer term storage I recommend purchasing moisture barrier bags, desiccant and moisture indicator cards.  They're relatively inexpensive.  You would need a heat sealer ($200-$300 and simple to use) I would not worry about vacuuming the bag, it's probably not worth the effort.  The formula for how much desiccant to use depends on what desiccant is used.  For example you might take  look at: 
http://texastechnologies.com/moisture-control/desiccant/silica-gel/packaged/sorb-it-silica-gel-unit-size.htm
for one example.  I have no investment in that company, it's just a reference to an example.

Good luck