As i also planning to do . for solo its good to go and nothing to worry u just need to know some rules and way to go ..what to do what not to do ...and where to go what are the timming ..and yes most important budget and number of days ..as of my case i am student so i always do in my budget with minimum expenses
Yes Solo travelers are not allowed. So here is the catch, if you say you are travelling alone in Permit office, it gets rejected straightaway. You need to club to any group that you see there in permit office, get the permit and then you can go alone.