You will need the following parts more than likely...
2 heads ($400 each)
6 dampers ($270)
1 cap station ($100)
1 pump ($100)
Rough parts estimate - $1300 plus shipping
Budget another $100-$150 in syringes, cleaning fluid, swabs, etc.
New Ink - Roland Eco-Sol 220's x 6 - $400
Ball park for...