Hello there!!

Swami Keshvanad Institute of Technology (SKIT) Jaipur is affiliated to Rajasthan Technical University(RTU) kota, so the admission is done by the REAP counseliing form. REAP is the common counselling form for more than 80+ affiliated colleges across Rajasthan. The counselling  is based on the score of JEE Mains. So without JEE mains you can't appear for counselling. As you have stated that you have scored 150000 rank in JEE, so this is approximately equal to 63-66 marks. So getting CSE branch will be based on the level of competition and some luck factor. You can opt for CSE as first choice and IT, other branches as other choices. Form filling have been started from 30 May 2019 and last date of form filling is 29 June 2019. Academic fees of JECRC is 80k per annum. And SKIT also have a decent placement.

If you have any doubt related to admisiion please let me know in the comments below.