Hi Mate. Unfortunately we're still confined here with lock down, so very very fed up with it!
Fuel wise, it's 95 octane that these were recommended to run on, but using 98 octane won't do any harm (might give marginal more performance, although emissions may be higher). Not sure how this new fuel that is being introduced here in the UK will affect them though (Named E10) which has a higher concentrate of Ethanol in it. This has been proven to react badly with the rubber gaskets/rubber fuel lines in older cars, but think ours might be ok. They have been using it in the USA for years and cars such as the mk1 MX5's seem to have been ok so as these are from the same era as our civics we hopefully should be fine.
Weight wise, the Aerodeck weighs 1120 Kg / 2469 lbs (approx and depending on what engine fitted)
Hope this helps
Dave