Kein Plan überlebt den ersten Kontakt mit den Würfeln. (No plan survives the first contact with the dice.) Baron Mannshed von Wreckedoften, First Sea Lord of the Bavarian Admiralty.
Thanks fellas. Yeah, I knew I had to scale it carefully, but even so, the Austrian left flank was a bit too packed in, so two Wurttemberg battalions got pulled back to the second line and Forgach's Austrians extended about a battalion further north than they did historically, but it otherwise worked. I did allow the Austrians to redeploy their left-wing cavalry slightly, so that they wouldn't be required to immediately run off the table edge. I think it would also have been better to have more room behind the Prussian right flank and perhaps drop Frobelwitz off the northern table edge (it's irrelevant).
Re the echeloned attack; I was pleased (and surprised) to discover that the echelon worked with the rules, thanks to the depth of the bases. 'Flank Support' is a key element of the rules and to achieve that, the front and rear edge of the bases must 'interlock' with its neighbour. Once I'd deployed the troops on the table, I found that the required depth of 'echelon-step' for each battalion was about 20mm, so with 25mm-deep bases, they were all able to maintain their flank-support without any need for 'special rules' (which I hate).