B.Tech

In IELTS each module must have 5.5 band and not less than 5 band to study in Canada. If you have no gap more than 2 years, you are eligible for the best university in Canada. You have 7 bands, I think this is the best score to enter in the university to study MS courses.

Hi,
ECE branch leads you to various field to work, you get to choose it. Choose which field you are interested in. You can even get into IT sector.

Yes, after Diploma they may seek for lateral entry test conducted by state boards for admission in B.Tech.

First year is quite easy. Afterwards, study duration depends on the branch like for CE, 2nd year is damn easy whereas 3rd year requires handwork.

You are advised to clear your backlogs after putting sufficient effort. You are further advised to concentrate in your remaining engineering studies and do very well. If you are able to achieve good final score, any recruiter will condone your gap year. You may go for higher studies like M.Tech or M

MBA degree after B.Tech will provide you sufficient skills and knowledge to become a businessman.

Netaji Subhas Institute of Technology is the only Institute affiliated to University of Delhi for all its UG, PG and Ph.D. programs in the field of technology. You are advised to appear for JEE to seek admission in NSIT.

I guess you should not face any problems as you have already cleared your backlogs. Moreover, you have a high GRE score and 3 years of work experience.