I don't see a problem for a beginner with a 12" dob on a trolly if they have a garden shed or similar. By the same token an 8" dob is unwieldy if you live on a top floor apartment and no car.
Everyone will have their own considerations.
I'd definitely take Brendan up on his offer to take a gander at his setup, it is a great system and he hasn't broken the bank to get there.
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