In which city exactly are you getting Liana in 4.5 lac? Because even a rough Liana will cost you close to 5 lac in Islamabad/Rawalpindi and Lahore. Maybe in Karachi it might be cheaper. Not sure.
To start with, you should stick with small cars. Once you are comfortable with them and know their ins and outs, you can move to a sedan. Sedans are expensive to maintain and need more knowledge and familiarity with car systems to make them work best.