With OA: 73 you might get a call from LIBA while getting a call from TAPMI and BIM Trichy are quite low. The work experience will help you get through the PI round where whole resume will be considered for final selection. There is no reservation of seats in these colleges .

https://www.careers360.com/question-cat-2018-percentile-oa-73-va-83-di-84-qa20-above-90-schooling-be-80-nc-obc-23-years-work-ex-chances-for-tapmi-bim-trichy

Please refer to my answer here. LIBA might also give a call. There is no reservations of seats in TAPMI.