I'm not sure that the total number of CAF troops deployed to West German was the key issue. Such postings were actually a bonus for recruiting, base housing already existed, etc. Nor was there a perceived need for Regular Force troops kept back in Canada (other than from training purposes).
Still, your concept of forward-placing vehicles/kit would be a relatively inexpensive way to grow the potential scale of 4CBMG. Then, flying in the bulk of the reinforcements at the first sign of escalation would makes a great degree of sense from an economic POV.
Getting back to
@GK. Dundas' OP emphasis on 1970s procurement, an argument could be made that
all required theatre combat equipment should be pre-positioned in West Germany. All that was required back home was sufficient kit to train on (for both Reg and Reserve forces) ... or, at least, that was a common attitude at the time. (And "Train like you fight" was still then a ways off.)