The Dons face Inverness Caledonian Thistle on March 16, and despite the Highland club's small support a large-capacity stadium will be required to house the expected huge Aberdeen contingent.
Hampden Park is unavailable as the national stadium is being redeveloped for the Commonwealth Games later this year.
An announcement is expected later this week, with the choice likely to be between Celtic Park and SPFL League One ground Ibrox Stadium.
McInnes told BBC Scotland: "It would probably have to be Glasgow to cope with the size of the crowd.
"I don't think anywhere else would be able to cope with it.
"Either Ibrox or Parkhead would do me fine. It really doesn't bother me.
"Whatever ground it is, hopefully it will be full of Aberdeen fans getting behind their team."
The bewildering delay in the announcement of the final venue is the latest in a long list of embarrassments for the SPFL.
Celtic Park has already been chosen for the Scottish Cup final, despite Celtic still featuring in the tournament, while Ibrox will host both semi-finals.