You you had a plan within next few weeks, then go to Sandakphu (West Bengal ). Right now weather is so chilling. You can experience a good trek over there..
You can try
Har ki doon approx 12000
Hampta Pass approx 12000
Kedarkanta approx 12000
Kuari Pass approx 10000
Nag Tibba approx 10000
Chopta app 10000
Valley of flowers app 9000
Dayara Bugyal
These are the treks I have gone thru, apart from these lots of options are available in northern part of India.
Hey...!!!
you will find lots of budget trek in North India, triund, kheerganga, kedarkantha, sarpaas, hampta pass and many more,
on the other side you can also try for mt. kanamo peak trek with Spiti.