@educator Hi there. Fellow Indian here. I would recommend DigitalOcean over Vultr due to a number of reasons having used both. However there is a 3rd option which is better imo and that is Linode. 2 main reasons.
Linode offers double RAM at 10$. You get 2gb RAM instead of 1gb for 10$. What I am getting from your post is that you want a 5$ plan. However it will be insufficient for even a small sized forum. Try going for the 2gb RAM option at Linode.
Unless you are a registered business in India you shall have to pay 15% service tax on Digitalocean as of Jan 1 2016. Businesses dont have to pay this tax as long as they dont have a turnover of greater than 10 lacs per annum. This is because DO has officially entered the Indian Market and will need to comply with the Indian Tax authorities. This is not the case of Linode as they dont have an Indian office . This means that the DO plan at 10$ will be more than twice expensive when compared to Linode.
Rest is upto you. Feel free to ask anymore questions
this plugin shows you how to create new routes, and static templates. I should update this example to show how to utilize dynamic templates but it would be something along the lines of
(totally off the top of my head... but yeah when I get the time I'll update the plugin to do the above)