so my friend and i are planning a month (maybe two) long trip through mexico and some of america. we'll be leaving from denver early march and taking i 25 (turns into 10) through new mexico and texas down to corpus christi. then we're crossing into mexico and heading down into the gulf coast to belize. we plan to stay in belize for a week or so and then head north, around gautemala, then cut over to the pacific coast. from there we will head up the coast until we eventually reach portland. he's staying in portland and i will make my way back to denver, staying in salt lake for a few days on the way. we will most likely stop at some obvious places such as cancun, acapulco, puerto vallarta, and maybe one of the cenotes south of cancun.

i have a 1997 honda shadow vt1100 shadow spirit
he has a 1983 honda magna vf1100

my questions are these?

how much dirt road will we encounter? do we NEED enduro tires or will we be okay with street tires?

what should the expected distance be between gas stations?

how safe is it to camp between towns down there? (sleeping bags and mosquito nets)

what are some good landmarks/towns that are a must see? mayan ruins maybe?

what are some towns that two non spanish fluent gringos should avoid?

what are some items that are a must have for the trip? what items should we avoid taking? (weapons and such)

anything else i may have not thought of?