thank goodness for luckycharm!
1 Meijer PriceMatching - DO check in advance with your local store as YMMV - but-many Meijers will PM general merchandise with certain limitations - I believe that the exclusions are BOGO, percentage off, and closeout. A number of Meijers have also been PMing grocery items!
2 I have not gone there before 5am, so I am not certain - I would suggest that you try to ask somebody who works the floor about what will happen, THEN go ask the front desk. Again YMMV as Meijer is open 24 hours and I have seen very different policies in different stores regarding regular sales.
techie question - generally yes, it's like buying a car off the lot - you can make SOME minor changes later, but not very many and they can be expensive. If you know what you want, unless you can find something extremely close to that in a BF package, you may prefer to order to your laptop to your specs. A key consideration is the processor - do you want or need the power of a full Pentium M? or will a Celeron M suffice for your needs? There is also the Athlon option, but I have not heard anything good or bad about their laptop processors yet. Good luck in school!!