I think your best move would be to take it to a reputable shop and have them base grind/set the edges for you. They can also talk to you about some of the bigger gouges which will probably need some Ptex. That base has seen better days, but the alternative is you turn it into a rock board and buy something in better shape. $150 for board, boots, bindings is OK as long as the boots fit and the bindings are in decent shape.
*EDIT* Well, there you go 3 people responding pretty close calling for the full tune/base grind.