Hello Aspirant ,

Based on previous cutoff trends , for OBC I guess you need to have a rank around 300 to get seat in SPA Delhi . But the scenario may change in the final round depending on the number of vacant seats if any . So you can give it a try but not chances are a little low . Anyways there is another option if you really want SPA Delhi, you can join through B.Planning and when a vacant seat comes up in architecture you can change to that but it may not be that easy, you need to be good at coping with the transition . SPA Vijayawada as good as Delhi  for architecture and the placements are fine too so it won't make a big difference , you have good option at hand .Always it is the course and your dedication and hard work that matters more, not the institution .

You may see the cutoffs in this link :

https://engineering.careers360.com/articles/jee-main-cutoff-for-b-arch-b-planning

All the best