OOC (Hunting Missing Girls)
a barge would put you at the edge of the Wetlands in ten days, ten silver/one gold. From the Wetlands overland via a passenger wagon in a trade caravan would put you in Lanis in another twelve days at a silver per day, no meals. but you could buy food easily enough when traveling with a caravan.
you can work for the caravan in a likely position such as guard, cook, porter, mule skinner, blacksmith, etc. for two to ten silver pieces per day. you would still have to cover meals, tools, etc. both of these modes of travel are very safe.
a private coach is a gold per day, but it could be in Lanis in eleven days from the town where you are now. much faster. you would stop at farms, towns, or way stations each night. You can get a meal, a bed, a drink, etc. at these stops at your own expense. the coach would average seven silver per day per person. the average overnight stay with a meal, a bed, and a pint of beer would cost a silver per person per night. so, one eighty eight (8 gp 8 sp) per person for the whole trip. it is the fastest and pretty damned safe.
if you guys were to simply walk you could cover the distance a little faster than the barge/caravan and make it in sixteen days. that would be dedicated moving you little feets with dedication cross country marching. if you want to move along much slower it would be double, or thirty days. your food, comfort, safety, and savings are your own to worry with.