Test preparation

if you can take admission you should definitely take it this year because taking a drop a studying a full year the whole same thing is very difficult.
I myself is a dropper and I had a very bad experience so would recommend you to take admission this year

This is the best you can go for Aviation Management. University provides industrial exposure through industrial visits, internships in leading companies, experts talk, seminars, competitions and several other activities. Placements have been very good in UPES and its BBA Aviation students have got placement in companies like SpiceJet Airlines, Programic Asia etc. So you should definitely join it. Admissions are running so apply at the earliest to secure a seat.

Depends on your taste and aptitude.if you are really interested in Software filed, please go with you decision. You can join for MCA course in some universities as Business Maths is a subject of study in B Com. But you required to posses a strong mathematical knowledge or skills for programming.
MCA with SAP will be a right combination.
All the best