It is an interesting question, isn't it? I think it's worth keeping in mind that those 4 arbitration years (especially the last 2) could be pretty damn expensive also (although still worth it).
If we had essentially an unlimited payroll, I'd say absolutely. If they stay healthy though (big if), those three guys might be capable of putting up 10+ WAR next year, at ~3M. We saw what happened this year when we were forced to plug a bunch of holes with scrubs. In some ways, I think we might be better off having multiple above average players than one star and a bunch of scrubs (yes I realize the two choices shouldn't be mutually exclusive, but they probably are given recent history).