Avoid the gap I must say. Because if you think ki I'll take a job after btech and then after 2-3 years of job experience I'll go for MBA. then for maximum people as per the reviews, this fails as due to a new directional life, aim of doing MBA somewhere vanishes. So I suggest you if you are too willing to do MBA then complete your btech and start MBA soon by scoring good in cat examination.

Best wishes. Thank you.