If you occasionally suspend ClimatePrediction in order to get new work and also contribute to other projects, it won't do your climate model any harm because cpdn ignores the deadlines and accepts results uploaded later. It's the only project to do this, but boinc doesn't realise.

As long as you don't complete it too late.....

When you eventually need a new climate model, there are now shorter ones also available. You can select in your cpdn project preferences. A shorter model might suit your computer usage and mix of boinc projects better. You can find out what's now available here.

We do need to finish our current models first though.