Hi,
I can help you installing the perfect environment for Magneto2 on your VPS and install Magento2 + the JP locale. However, migrating from Magento 1.9.x to 2.x is a different beast. I've done it before and I ended up spending 20 hours more than I anticipated to migrate it. They have a tool to do it, but it only migrates certain data and it fails almost 90% of the time, needing lots of manual interventions to pull it off.
Can you let me know how many products are we talking about? Can I see your current Magento 1.9?
My bid is for spending a maximum of 4 hours on the migration. If it doesn't work, it will require you to pay more for the extra hours. If you can understand that, I'm in and I'll do a great job for you. Whoever says otherwise, doesn't have any idea about what they're talking about.
Thanks,
Cosmin