Partial capital gains

If I have capital gains of Rs. 90 lacs, after adjusting losses from long term losses from equities. My net sale amount of the property is 140 lacs, If i wish to purchase property worth 80 lacs in one yrs time. Can I deposit only 80lacs in capital gains account before filing of the return and on rest amount I can pay capgain taxes. If i have already paid the advance tax, is there any problem in getting the refund of taxes.