I am thinking of goin to thailand and maybe vietnam and wanted to no how much would you need for about 6month plus if any 1 has any info that would be helpfull please, also is it easy to travel on motorcycle round thailand finding different hotels as u go, thanks

You cannot take a bike into Vietnam. You might be able to buy a bike in VN and then go to cambo with it.
Riding in Thailand is ok but you must stay alert. Riding around Bangkok is a nightmare if you dont know your way around. Plus the traffic is terrible, even while riding a scooter.
your best bet is to take a nice air-conditioned bus between cities and rent a bike when you get to your destination. All the tourist cities of thailand have scooter and big bike rentals.
This saves a lot of paperwork hassle at the borders as well.