You can carry CAD but you can not endorse, and if you carry USD you loose in conversion. We decided on carrying mostly CAD but a part as endorsed USD.
Snickers should be okey if is in leather. I think Lotto is Korean. You can explore hush puppies, Apex shoes with heavy gripped sole, good on snow. You can also look for woodland (high-neck shoes), RED Tape, RBK, Sketchers, CAT these would last long. Again you can buy decent shoes from there as well.
For suitcase Indian President and VIP are good brands available in Newmarket from dealers with fixed price, there are Chinese brands with fixed prices as well: Aristocrat, Marks, Polo etc and also you can buy Pierre Cardin or American Tourists or Samsonite which would be atleast double the price from Indian or Chinese. These all are available at Shabagh (Janatar Moncho, IPGMR) or at New Market. Some good second hand staff are available at Baitul Mokarram Under the Mosque. We virtually agreed on taking cartoon boxes for two reasons; one, space restrictions and secondly they are expensive. My family always had allowance for 04 full size suitcases, now we wish to add on 04 nos 23 KG cartoons, properly wrapped and leveled. Most of our friends and family shifted like this without problem. These will cost 60-100/pcs Taka maximum.
Dont go for hard cases, then you end up breaking them as airport mis handles them, Go robust thick canvas/ Fabric type with belt all around (Ask them and you get additional wrap around belt for 120 taka max). A Mid size suitcase (32")would be 3200 to 3600 taka I believe if Chinese, Indians would cost 500-700 taka on top and the good one 7000 taka or more.
If you have toddlers it might be an option to avail insurance otherwise I think not required, carry tentative medications for 3 months though.
Salam