Is a dry survey okay or should I spend the extra for the wet

[Brassmonkeys]

I am looking at a 1998 39 foot catamaran that is currently being stored on the hard. This would be a new purchase. The boat appears to be in good shape and it is powered by two fixed outboard engines instead of diesel. I already know I need to replace one of the engines and they are very affordable to do it yourself. The other engine is brand new and has not even been in the water yet.

If I spring for a wet survey then I will have to pay for a haul, blocking fee and seat trial. I will also need to rig all the sails and unfortunately the boat is a 10 hour drive away. Since I am not worried about the engines is it a big deal to skip the sea trial and just rely on the dry survey?