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It does not make much sense to do a BCA after you have completed a Diploma in architecture, unless you are interested in studying computer sciences and pursuing a career in the same field.
To improve your career prospects you need to study further either in your technical field or in a general area of study. If you wish to study further to improve your job prospects, then as a Diploma-holder, you can seek lateral entry to the second year of BE. Several engineering colleges offer this provision. You can pursue your Bachelors in architecture from Indian Institute of Architects (IIA) through correspondence. It conducts non-formal engineering education programs, successful completion of which is recognised as equivalent to a graduate degree in engineering. The Associate Membership of the Indian Institute of Architects (by examination) is at par with Bachelors Degree in Architecture of recognised Indian Universities as notified by the Government of India for the purpose of employment and services under Central government. In appropriate field.

There are 3 stages to becoming a commercial pilot as mentioned below:
1) To become a commercial pilot in India, one has to first possess a Student Pilot License (SPL). To get the SPL those with 10+2 with Science and aged at least 16 years should register at a flying club, which is recognized by Directorate General of Civil Aviation (DGCA), Government of India. Registration requires a medical certificate, security clearance and a bank guarantee. An oral examination in subjects such as Air Regulations, Aviation Meteorology, Air Navigation, Engine (technical and specific) follows the registration. Successful completion of the examination entitles you for an SPL certificate.
2) The second step is the Private Pilot License (PPL). PPL training includes sixty hours of flying of which about fifteen hours are dual flights, that is accompanied by the flight instructor and at least 30 hours of solo flights apart from five hours of cross-country flying. This makes one eligible for the PPL exam, which consists of Air Regulation, Aviation Meteorology, Air Navigation, Aircraft Engines and Seamanship. The prescribed age for appearing for this exam is 17 years and an educational qualification of 10+2 along with a medical Fitness Certificate issued by the Armed Forces Central Medical Establishment (AFCME).
3) A Commercial Pilot Licence may be obtained only after a PPL has been acquired. To obtain a Commercial Pilots License (CPL) 250 hours of flying (including 60 hours for the PPL) is necessary. Besides that you have to undergo a Medical Fitness Test which is held at New Delhi and an examination which consists of Air Regulations, Aviation Meteorology, Air Navigation, Technical, Planning, and communications in the form of Radio & Wireless Transmission. With the CPL, a pilot can take up any professional assignment.