Well there's another cost to include in your bill. List it as admin charges. It wouldn't just be accepted in any other industry without charging to cover the additional costs and labour.
Seems like it really wouldn't be worth the effort for a one off gig.
I'd want to add on a charge for a few hours labour to go through all that. It's extra work that you have to do so surely it's only reasonable that they pay for your time.
I'm using an Orange Terror head which has two 4 ohm speaker outputs and at the moment I'm using a single Orange 4x10 8 ohm cab.
I'd like to add a 1x15 cab for some extra bottom end.
Would the 1x15 have to be 8 ohm as well or will 4 ohm be OK?
Does it matter whether it's an Orange cab?
Check out local music groups on social media and ask for amp repair recommendations.
I've had a few repairs done by local electronics engineers who work out of their garage.
I'm really excited about it. I've not seen them live before. I'm expecting something like Motorhead, loud, raw and rough but tight and heavy and a big wall of sound