Car's resale is established when people actually buy.
Swift resale is not great so dont expect miracles when you are going to sell after 2 years.But still it is a safe option and it is not fuel efficient aswell.
Say good bye to CNG.It is not feasible now.Long queues will negatively affect your temperament.
Stretch your budget and buy city(safest investment)
WOnt recommend any JDM.
My vote goes to V2(houses same vitz first gen 2NZ-FE 1.3 L ) engine,more efficient than swift,ABS+EBD,dual airbags,better safety,power windows etc.Test drive recommended