Should I choose IET Lucknow or any other college if I have a 70,000 rank in the JEE Mains?

I have a friend who is an alumnus of IET Lucknow and according to him, you should enroll at whichever decent college you can find with a good branch, as you won't have many options at your rank. 

And If you fall into the general category, your selections at this rank will be severely limited. If you are offered IET Lucknow, it will be better to take it. 

You should check out the JOSAA website for last year's closing ranks of different institutions in your category in the various stages, this will give you a good sense of what you might be able to achieve.

Hope this answers your doubts.