I suppose you can, but it will attract insects and rodents. If you luggage gets wet, the wet sugar can get on all of the items in your luggage.
6 bags
The Hessian Sugar bags weighed 25Kg.
The coffee can be any flavor or blend but the coffee beans needs to be ground at a slightly coarse medium setting. If its too fine, it'll go thru the metal filters in the french press. If its too coarse, the coffee won't brew properly and will be too weak.
Perhaps this Guide to Green Coffee Bags will help you.
It depends on how big the bags are.
If you have them folded up nicely in a suitcase, you can bring as many as you want.
The best way to do this is to make 7 5lb bags and 4 4lb bags.
first you pack your bags, go on a plane, get off the plane, then you'll be there
If the bags are 16 oz. or 1 lb. bags, 2000. If the bags are 12 oz. then 2666 and 2/3.
Sweet marias http://www.sweetmarias.com/sweetmarias/miscellaneous/bags/valve-bags/coffee-tin-with-de-gas-valve.html
Most stores will sell travel bags. It depends on what size you need and if the store has it. If you look around in a mall near you there is most likely a store that has travel bags.
The term "lbs" means "pounds", so you should buy as many "lbs bags" as the amount of pounds of sugar that you need.