I suppose the easiest start would be using the ecm server like elevensmooth...
pROBLEM is ecm6.0 isn't net ready if I recall and it's still not as good as prime95.
Perhaps it would be possible to use the code from ecm-client to obtain pairs and a script or something to run prime 95 on the numbers. We could easily setup the co-ordination to have the net client do one particular k or reserve ranges for it etc...
As in the above post all good intentions the only problem is the implementation.
Currently it's just as easy to reserve well in advance. IF your not going to be albe to touch a machine for a year... reserve 12M-12.1M and let it rip.