October is not the nice time for road trip to Ladakh, anyway if you have decided no need to worry about roads as BRO is taking care of it and every Tuesday they closed it for maintenance.
Only thing you check with Manali muncipal corporation the closing dates of road for outsiders or travellers. You will get waters on roads for sure. dont forget to carry first aid box and safety equipment. Its gonna be more adventures as you are expecting; believe me (y) Good Luck
First week of October is possible but quite dangerous. I recently came from there. The road condition is pathetic. You will come across through many waterfall crossings. But the journey is quite adventurous as well.
Srinagar route is better than Manali route. If you go from Manali route you can have high altitude sickness. I also wants to go to ladakh but I am going in April, roads are not good and covered with heavy snow. If you really wants to go then you have a good satellite phone is necessary
The road conditions are just perfect. If you are going by Manali the roads are good except at few parts near Serchu. Baralacha recently recieved season's first snowfall. From Srinagar the roads are just awesome but takes atleast 2 days to reach Leh.