Polytechnic

Hi Sandeep,
Both of the procedure, which you mentioned are equally tough and challenging and it depends on your knowledge and skill set. It depends on an individual to decide whether to pursue admission through the regular way (JEE Mains) or through lateral entry (LEET).
I hope it helps. If you have any further questions, kindly revert.

All the colleges or universities consider Polytechnic course equivalent to class 12th not only in Delhi but across India.

Yes, you can choose any branch in Diploma engineering. Electrical would be best because you already have the basic knowledge of it.

It depends on you. If dropping one year makes yourself sure that yes, you can take admission in a good IIT then dropping 1 year is fine but after even investing your one year if you are not getting into IIT or not getting desired job it is truly waste. So, please make yourself sure and confident that Yes, you can get into IITs.
Otherwise, your second option is also not bad. But you get less career opportunities there.
Best of luck.

You should pursue Diploma in engineering after completing ITI. You will be able to get direct admission in 2nd year.

B.Sc honors from DU University is the best option.

You will get to study basics in Diploma of engineering.

You should do diploma engineering in electrical engineering because you have basic knowledge of electrical engineering in ITI.

You can pursue B.Tech after completing Diploma in engineering in CS and IT branch.